ATN Inc. - Frequently Ask Questions

Common Question and Answers across the ATN Product Line

Picture of Etienne and the Sunrise Yacht Products Team
Common Questions

Frequently Asked Questions

Where are ATN products made?
ATN designs its products in its own shop in Pinellas Park, Florida, where it also manufactures its core lineup, including the Spinnaker Sleeve, Genoa Sleeve, Tacker, and Mastclimber. ATN has built sailing equipment in-house since 1985 and now benefits from being part of the Sunrise Yacht Products family.
Can I buy ATN gear direct from the manufacturer?
Yes. ATN sells both direct to our customers and through our resale network of sailmakers, lofts, and chandleries, so you can buy wherever is easiest and most convenient for you. Sailmakers, lofts, and chandleries not already in the network are welcome to become ATN dealers.
Who founded ATN, and what does ATN make?
ATN was founded in 1985 by offshore racer Etienne Giroire, designer of the modern spinnaker sleeve. ATN makes the Spinnaker Sleeve, the Tacker, the Mastclimber, the Gale Sail storm sail, multihull nets, and other shorthanded and offshore sailing gear.
Where is ATN located?
ATN Inc, 6544 44th St N #1209, Pinellas Park, FL 33781, USA. Phone +1 954-584-2477.
Spinnaker Sleeve

Frequently Asked Questions

Is the ATN Spinnaker Sleeve used by professional racers?
Yes. Every Vendée Globe winner since 1989 has carried the ATN Spinnaker Sleeve. Thanks to its bulletproof reliability, the ATN Soft Sleeve is now favored across virtually every shorthanded racing class above 35 feet; roughly 90% of Class 40 boats, for example, carry at least one ATN Sleeve.
What's the difference between the ATN Spinnaker Sleeve and cheaper alternatives?
Four elements. First, the hoop - ATN's FRP (fiberglass-reinforced plastic) on the Hard variant, or the foam-wrapped aluminum bell on the Soft, holds shape under sustained load. Injection-moulded plastic bells on budget alternatives can deform and jam against the mast during a douse. Second, the integrated control-line side sleeve - the downhaul cannot tangle with the spinnaker because they are physically separated by the side sleeve. Cheaper designs run the line outside the body and snag in heavy weather. Third, dual-color twist detection - see twists from the cockpit at a glance. Fourth, dual-diameter control line - lighter line inside the sleeve, thicker line at deck level for grip. Cheaper designs use a single diameter and compromise on both.
Will it work on an asymmetric spinnaker or cruising chute?
Yes. The ATN Spinnaker Sleeve works on symmetric and asymmetric spinnakers, cruising chutes, gennakers, screechers, MPS, and mizzenstaysails. For asymmetrics, measure the leech (head to clew) - not the luff. The leech of an asymmetric is shorter than its luff; using the luff will give you a Sleeve that is too long. If you fly the asymmetric without a pole, pair it with the ATN Tacker for tack control.
How do I size the Sleeve correctly?
Use our pricing calculator on this page - enter the leech length plus the type and weight of your spinnaker and the calculator does the rest. If you are not sure, call +1 954-584-2477 with your boat type and sail dimensions and the ATN team will confirm the hoop size before you order.
Can one person really use this alone?
Yes. The single-line control mechanism and the dual-diameter line are designed for one-person operation. Douses typically complete in under 60 seconds. The Sleeve has been used single-handed on boats up to 15,000 sq ft of spinnaker (Frers/Huisman 156' mega-sloop Hyperion). For most cruising and racing boats, a single adult can hoist and douse without help in normal conditions.
Can I retrofit just the modern Pennant, or do I need the full modernization?
Both options exist. Pennant-only retrofit replaces the existing Pennant with the current single-piece Dyneema Softie with dog bone (Generation 3). Pricing: $150 / $185 / $245 / $300 by hoop size #3 to #6. Full Modernization converts an older Hard Sleeve to current Soft Hoop standards AND installs the current Pennant - pricing $375 / $445 / $580 / $740 by hoop size. Both services run 2 to 3 weeks turnaround in our shop. See the Refurbishment section above for shipping instructions.
ATN Tacker

Frequently Asked Questions

What size Tacker do I need for my boat? v
Two sizes. Size A is for boats up to 36 ft LOA. Size B is for boats up to 50 ft LOA at. Bulky furled genoas usually do not require sizing up, but if unsure, measure the diameter of your furled genoa just above the lifeline and email us. Going one size larger is never harmful, just overkill. Remember, a little Sail Kote helps it slide even more easily.
Does the Tacker work without a roller furler? v
It would work, but is overkill. You could use a single hank/shackle that would do nearly the same thing at lower cost.
Do I need an extra halyard to use the Tacker? v
No. The Tacker itself does not require a halyard. You use your existing spinnaker halyard to hoist the spinnaker, and a downhaul / tack line which could be led aft to the cockpit to position and adjust the Tacker up and down the furled sail.
What is the lifespan of an ATN Tacker? v
Tackers in continuous summer-season use typically run 10+ years before any wear part needs replacing. ATN supports the product with parts and warranty repairs.
Hard-luff vs soft-luff: does the Tacker care which I have? v
The Tacker rides on a furled headsail. It doesn't care if it is a soft furler or an aluminum furler.
Can I use it to hang my hammock? v
Oui. A LOT of our customers have found second duty for this as a hammock clip when it's time to relax at anchor!
Gale Sail

Frequently Asked Questions

What size Gale Sail do I need for my boat?
Size is based on rig dimensions, not just boat length. A true storm jib must be no larger than 5 percent of your I measurement squared. 28 to 35 ft boats typically use the 60 sq ft. 36 to 43 ft boats typically need the 100 sq ft, which is also built from heavier cloth than the 60. 44 to 52 ft boats use the 150 sq ft. If you want a dedicated storm jib only, size down. If you want a second working jib for heavy weather as well, size up. Use the calculator a bit further up in this page or send us your I measurement and boat model and we will confirm.
How does the Gale Sail compare to the Storm-Bag?
The Gale Sail stows in less room and wins on offshore passages. SAIL Magazine (David Schmidt, 2016): “The Gale Sail shines on longer passages and for serious offshore work. ” Practical Sailor (June 2009): “for a sailor looking for this type of product, it is a better option than the Storm-Bag,” at about $350 less than a comparably sized Storm-Bag for a 36-foot full-keeled test boat. Read the Practical Sailor review.
Can I hoist with the spinnaker halyard, or do I need a spare halyard?
The Gale Sail hoists with the spinnaker halyard by default. If you have a spare offshore halyard run (recommended for serious passages anyway), use the spare and keep the spinnaker halyard as backup. Storm-jib loads on a 60 to 150 sq ft sail are well within a properly sized spinnaker halyard’s working load.
How do I take it down in seas?
Why would you? That’s when you should be using it. In most cases wait until the storm dies and then take it down.
I have a cutter rig. Where do I hoist the Gale Sail?
On a cutter you have options. Hoist over the furled staysail when you are hove-to (it keeps the storm-jib area centered over the lateral plane). Hoist over the furled genoa when you are running off in a storm (it moves area forward, useful with a deeply reefed main). Both work; the choice depends on your sail plan and the apparent wind angle you are settling for.
Does the Gale Sail meet ISAF OSR storm-sail rules?
Yes. Gale Sails built since 2014 are constructed of storm-orange Dacron meeting ISAF OSR 4.26.2(a). The US Sailing Prescription (approved 12 March 2012, effective January 1, 2014) applies the OSR requirements to CAT 0, 1, 2, and 3 races. Gale Sails purchased before January 1, 2014 are grandfathered.
Can I store it in the rope locker?
Yes. The Gale Sail packs into a compact box (about 28 × 18 × 9 in, 22 to 32 lb depending on size). On the boat, it lives in its own bag in the rope locker or the V-berth. SAIL Magazine noted: “it takes up considerably less room” than the Storm-Bag.
What is the fabric warranty?
Storm-orange Dacron and oversized piston hanks are built for offshore service. We do not publish a fixed-year warranty because storm sails are by definition expected to see survival conditions; instead we support the product with parts, repair, and rebuild. Send photos and a description if you ever need work. Pepper R. used hers for a circumnavigation. William Ennis used his for the French Polynesia rescue and gave it the “Best Gear Award.”
Can you retrofit my existing storm jib into a Gale Sail?
Yes. Ship your storm jib to ATN. We add the Gale Sail pouch / sleeve that slides over your furled headsail at $28.50 per foot of luff length (so a 20 ft luff is about $570). The pouch adds 10 to 15 sq ft depending on size, in 8 oz soft Dacron reinforced with webbing, finished white with a storm-orange top. Before sending, consider whether our standard ATN Gale Sail (proven, class-legal, stocked in 60 / 100 / 150) ships immediately and may suit you better. Email with pictures of what you have before sending to coordinate on expected lead times.
Custom size lead time above 52 ft?
Custom sizes above 52 ft are built to order in our Pinellas Park, FL shop. Lead time runs 3 to 5 weeks for fabric ordering, sail layout, sewing, and finishing, plus shipping. Contact us with your boat make, model, year, I measurement, and intended use to start a quote.
Genoa Sleeve

Frequently Asked Questions

How do I order an ATN Genoa Sleeve, and what do you need from me to quote one? v
You can order directly on this page (just choose your length, circumference, and color) or email us directly. We need three things: the luff length of your furled genoa (in feet or meters), the maximum circumference of the furled sail at the clew with the sheets on, and your color choice. Pricing is per foot. Once we have measurements and payment, build plus delivery typically runs two to three weeks. The Genoa Sleeve also fits code zeros and furled asymmetricals at the right circumference.
How do I measure my furled headsail for the sleeve? v
Two measurements. (1) The luff length of your furled headsail, head attachment to tack attachment. (2) The maximum circumference of the furled sail at the clew, with the sheets on. Order the sleeve at the luff length. The 45-degree slanted top opening adds enough coverage to swallow the roller-furler head swivel when hoisted with the spinnaker halyard; no overlap built in or needed. If you have two headsails of different sizes on the same boat, one sleeve will cover both because the DoubleCross gathers excess cloth so long as you size it for the larger of the two (or three) sails.
Will the sleeve really stop the headsail from flapping in strong wind? v
Yes, when sized and tensioned correctly. Flapping happens when the sleeve is loose or oversized: wind gets inside it and shakes the whole rig. The ATN Genoa Sleeve uses the DoubleCross lacing system, which you tension from the deck after hoisting. If it still moves in heavy air, slack the sheets and rotate the furler a few turns; that twists the sleeve tight around the sail. Sizing is critical, so always supply the maximum circumference at the clew with sheets attached when ordering.
How does the sleeve hoist? Does the sail have to come down? v
The sleeve hoists with the spinnaker halyard. The sail stays on the headstay, fully furled. Connect the head pennant of the sleeve to the spinnaker halyard, attach the tack at the deck, and hoist. The cover slides up over the furled sail. No need to drop the genoa, no foredeck wrestling. Two cleats at the deck and the DoubleCross adjustment finish the install. Most owners do this single-handed in under five minutes.
Is the ATN Genoa Sleeve good for racers? v
Absolutely. Around 50% of our customers race J boats and use our Genoa sleeves to protect their high dollar headsails when at the mooring. The next time you're at the Annapolis sailboat show and you're crossing the bridge, take a look down and you'll see a number of the J boats with our Genoa Sleeve protecting their headsails.
How long does it take to ship, and how do I track it? v
Most Genoa Sleeves ship within one to two weeks of confirmed payment, shipped from our Pinellas Park, FL facility. During busy seasons or supply-constrained periods lead time can stretch to three weeks. Once your order ships we email the shipment tracking number.
My older sleeve has a worn zipper or chafing along the fold lines. Is it under warranty? v
The Genoa Sleeve is a sacrificial cover: its job is to take the chafe and UV damage so your expensive furled genoa does not have to. Some wear along fold lines and at the tightening lanyards is normal, and is not a warranty issue. Stitching failures, torn reinforcements, or a zipper catching the flange are manufacturing defects and we will repair or replace. Ship the sleeve back; we will fix it, often reusing the existing hardware to keep the cost down. We now build with Top Notch 9, which lasts considerably longer than the older Odyssey 3 material.
Can you repair an older ATN sleeve, or extend its length? v
Yes, in most cases. Ship it to our Pinellas Park facility. If the sleeve is too short, we can add length at the bottom by extending the body or adding a velcro-closing piece to cover the exposed portion of the furled sail. Worn zippers must be replaced entirely; there is no shortcut fix. Stitching repairs and minor hardware fixes are routine. If the fabric itself is shot from many years of sun, replacement makes more sense than repair, and we can often reuse your existing hardware and rope. Contact us first with a photo and we will advise before you ship.
How long will the Genoa Sleeve last, compared to a sewn-on UV strip? v
A well-cared-for ATN Genoa Sleeve outlasts a sewn-on Sunbrella UV strip in most owners' hands. The sleeve is built in Top Notch 9 marine canvas with an 8-year fabric warranty, stitched with Tenara PTFE thread with a 15-year warranty. A sewn-on sacrificial strip is typically 5 to 7 years in the tropics before it starts to crumble. The sleeve can also be repaired or rebuilt at our Pinellas Park facility, often reusing existing hardware. (This question was raised on a SailboatOwners thread by Warren Milberg in 2013.)
MastClimber

Frequently Asked Questions

How do I order the ATN Mastclimber, what does it cost, and how quickly can you ship it? v
The ATN Mastclimber pricing can be found here. All three are generally in stock. Order through our website, or simply email us your shipping address, phone number, and what you want and we'll put the order together for you. US Priority Mail, DHL, and FedEx options are available if you need expedited delivery for a specific date - tell us your deadline and we'll quote the exact shipping cost. Florida customers pay state sales tax. International orders are welcome; contact us directly so we can arrange shipping. Local pickup at our Pinellas Park facility is fine if you prefer.
Is the ATN Mastclimber safe to use alone, and do I need a separate harness or safety line as backup? v
The ATN Mastclimber is designed for solo use and engineered so you cannot flip backward: the chair's attachment point sits at shoulder level, above your center of gravity, unlike a standard harness. You climb directly up your own halyard (typically the spinnaker halyard) which is already a low-stretch line rated well above your body weight; most cruising halyards have a safe working load around 2,000 lb. The biggest risk in conventional mast climbing is the person on the other end of the halyard; with the Mastclimber, you control the ascent yourself. A separate climbing harness is generally unnecessary, but if you want a backup halyard for peace of mind, there is a large stainless ring at the chair attachment point where a second line can be tied off. Many experienced owners on CruisersForum and SailboatOwners recommend always having a deck spotter when going aloft, and we can't disagree.
Can I buy replacement parts for my ATN Mastclimber - ascenders, footstraps, pins, or the tool bag? v
Yes. The Mastclimber is the only single-handed system on the market that gets your working seat above the masthead without leaving the chair. berner73 on SailboatOwners described the technique: 'I tension the halyard differently depending on where I'm heading. For working inline with the mast, make sure the halyard is taut to the deck as it makes everything easier. For work at the top, the setup puts you at a comfortable level above the masthead to work. If you need to get out on the spreaders, slacken the halyard just a bit. You will swing more on the way up, but it allows you to work off the shrouds.' The reduction clip - the stainless carabiner on top of the bosun chair - is the part that gets you the extra step at the top. Source thread
Do you ship the ATN Mastclimber internationally, and is there a dealer in my country? v
Yes, ATN ships the Mastclimber worldwide directly from our Pinellas Park, Florida facility. In today's market of fast, affordable global shipping, we generally do not use international dealers - ordering direct is quicker and usually cheaper. We ship via USPS Priority Mail, FedEx, DHL, or UPS, with USPS Priority typically arriving in 5 to 7 business days to most countries. To get an exact quote, email us your full shipping address and phone number. We accept major credit cards and electronic payments.
How do I get all the way up above the masthead? v
To reach the masthead, slide the upper ascender up until it touches the halyard block, stand up in the foot strap, then clip the reduction clip (the stainless carabiner on top of the bosun chair) into the upper ascender bow shackle. This raises you another step so the masthead is at chest level. The white webbing strap goes around the mast to free both hands for work.
Can I order the Mastclimber over the phone or without setting up an online account? v
Yes. Call us at +1 954-584-2477 during business hours and we will take your order over the phone with a credit card. There is no requirement to create a web account. We can also process orders by email if you send your shipping address, phone number, and payment details (we will provide a secure PayPal invoice link rather than asking for card numbers over open email). The website cart works for sailors who prefer to self-serve, but is not the only way to buy.
Should the halyard be tight or slack while climbing? v
Tight. Owners on EricsonYachts.org described the same technique: anchor the halyard you are climbing to a chainplate or another rock-solid loop on the deck, then crank tension on the halyard from a deck winch before you start. vanilladuck wrote 'This keeps me moderately stable while climbing and descending.' southofvictor agreed: 'I found that with the ATN it is easier to climb with your halyard really tight.' One scenario flips the rule: berner73 noted that for work out on the spreaders, slackening the halyard a bit lets you reach the shrouds. Source thread
ATN markets it as a single-handed bosun's chair - should I actually use it alone? v
The product is engineered for solo use. The shoulder-level attachment prevents flip-back, the cam ascenders self-lock under load, and ATN has shipped tens of thousands of units for solo work since 1990. That said, the experienced sailing community consistently recommends having a deck spotter whenever you go aloft should you have the option. Our recommendation: if you have a competent helper available, use them - they can handle a retrieval line and the unexpected. If you are truly alone, the Mastclimber is the right tool, but plan the climb in daylight, in calm conditions, with a phone in your pocket. Source thread
Can I really reach above the masthead, and how do I set up halyard tension for different work positions? v
Yes. The Mastclimber is the only single-handed system on the market that gets your working seat above the masthead without leaving the chair. berner73 on SailboatOwners described the technique: 'I tension the halyard differently depending on where I'm heading. For working inline with the mast, make sure the halyard is taut to the deck as it makes everything easier. For work at the top, the setup puts you at a comfortable level above the masthead to work. If you need to get out on the spreaders, slacken the halyard just a bit. You will swing more on the way up, but it allows you to work off the shrouds.' The reduction clip - the stainless carabiner on top of the bosun chair - is the part that gets you the extra step at the top. Source thread
Should I use a backup halyard as a safety line? v
It's always best to err on the safe side. If you have the option a crew handling a retrieval line that is the safest option.
ATN Mastclimber vs Mastmate - which one for me? v
They are mechanically different products. Mastmate is a separate ladder-track system that bolts onto your sail track; you remove the mainsail, hoist the ladder, and climb rungs. The Mastclimber is a rope-ascender system: you climb your existing halyard with no track modifications. Avi on SailboatOwners weighed both and chose Mastmate when he came in at 220 lb; Joe (Catalina 27) at 190 lb chose the Mastclimber and used it for masthead work. The general rule: if you sail track gear is in good condition, you don't mind removing the mainsail, and you want a slower, ladder-style ascent that feels like normal climbing, Mastmate. If you want a faster solo ascent on any halyard with a working seat at the top, the Mastclimber. Source thread
Does the Mastclimber make noise grating against the mast? v
Honest answer: the cam ascenders can contact the mast extrusion on the way up, especially in the upper third of the climb where the cuff comes close to the spar. The technique fix is to pre-tension the climbing halyard hard to a chainplate (see the halyard-tension FAQ above) so the climber's body holds clear of the mast on the way up rather than swinging into contact. Several owners also wrap a neoprene sleeve or a strip of webbing around the cam housing to muffle metal-on-aluminum contact and protect mast paint. Source thread
Catamaran Gurus on whether the Mastclimber is the right tool for the job v
Estelle Cockcroft, writing on The Catamaran Gurus (2016): 'The ATN Mastclimber makes a scary, tough task a lot easier and safer - and a whole lot less scary. It is the only single-handed bosun's chair on the market that allows the climber to work above the masthead without leaving the chair.' Source
middlebaysailing on long-term ownership and what to expect at age 70+ v
Two owners weighed in on middlebaysailing. Roly Stanley (2017): 'I'm pretty happy with my Topclimber. I feel a bit top heavy with it and prefer to use my harness as well for a secondary attachment when standing on the loops at masthead. (66 yr old with various ailings!) I have no problem getting over the mast top but then I'm 6'2.' Fred (2017, age 70): 'It is difficult to attempt. Releasing the feet strap seems to be my problem... Your halyard must be very tight, this will help some.' Honest signal: the system rewards line tension and rewards practice. Source
SailBoatRefit on the mast-contact concern v
goldenstate, writing a long-form Sparcraft masthead-tour review on SailBoatRefit.com (2020): 'Maybe the Mastclimber is not the right approach for me. If I had a standard bosun's chair and three prussik knots with two lines, I wouldn't scrape up my mast and I could ascend and descend faster, I think.' We acknowledge the mast-contact concern - see the customer-concerns section above for the technique fix (pre-tensioned halyard) and the optional webbing-sleeve mod that owners have documented. Source
Sailing Errant on the first-impression learning curve v
Rob Thomas, writing on Sailing Errant (2015): 'Purchased ATN's new version of the top climber called the Mastclimber. Worked reasonably well once you get the hang of it. The downside is the clutches scratch the heck out of the mast when you get near the top.' Again, the technique fix is pre-tensioning the climbing halyard before the ascent so the cuff rides clear of the spar. Source
Yachting Monthly Tried and Tested on the Mastclimber category v
Yachting Monthly featured the ATN Mastclimber in its Tried and Tested column, evaluating it as the leading single-handed bosun's chair available to UK and offshore cruising sailors. The magazine's editorial finding aligned with the owner consensus: it is the only category-of-one product for sailors who need to work above the masthead alone. Source
AirScoop

Frequently asked questions

Does the AirScoop fit my vertical hatch? v
The AirScoop fits hatches 18 inches long by 9 inches high or less, which covers the great majority of standard production catamaran and monohull vertical hatches including Dufour, Beneteau, Lagoon, Fountaine Pajot, and many others. The footprint diagram on the product page lets you compare against your hatch opening. If you are not sure, contact ATN with your boat model and hatch brand; we will confirm fit before you buy.
Do I still need air conditioning if I use the AirScoop? v
It depends on the conditions and what else you are running. The AirScoop drives moving air through your cabin. Combined with the Multi Awning shades the deck and cabin top and the Dorcap covers your deck hatches, the three together cut cabin heat load enough that many cruisers run AC less, run it on lower settings, or skip it entirely in moderate conditions and overnight. In peak summer at a windless dock the AC still has work to do, but the cooling system lowers the load and the runtime materially.
How does the AirScoop compare to a dorade vent or cowl vent? v
A dorade vent or cowl vent requires you to cut a permanent hole in your deck. The AirScoop is portable, requires no deck cuts, clips into any vertical hatch in under a minute, and drives meaningfully more air through the cabin when the wind is up. No modification to the boat.
Can I leave the AirScoop up in rain or overnight? v
Yes. Leave it up in rain through Force 5 conditions (sustained 17 to 21 knots). Take it down at Force 6 (sustained 25 knots and above) and in any storm with driven spray, regardless of wind direction.
How long does the AirScoop last in the sun? v
Owners running the AirScoop continually in tropical cruising-use report four years of service life on the Lexan material. Seasonal or occasional users report meaningfully longer life.
Does the AirScoop work on power boats as well as sailboats? v
Yes. The AirScoop fits over most vertical opening hatches on power-boat hulls as well as sailboat hulls.
Belgian Jib

Frequently asked questions

Does the Belgian Jib install on a furling headstay, or only on hank-on rigs? v
Both. You can hank onto a headstay directly or attach it to the furling jib with a sail tie.
Will it fit my J/105, Class 40, or other one-design class? v
Standard production sizes are tiered by boat length (25 to 35, 36 to 45, 46 to 55, 56 to 65 ft).
When do I deploy it? Can I get it up after the wind builds past 20 knots? v
You could, as it has minimal windage; however, in 20 knots you are in heavier wind conditions than would warrant the need for this. If you want to go to bed and anticipate lighter air then this would be a solid move.
How does it pack and stow? v
The Belgian Jib packs into a sailbag-style stuff bag and stores in any sail locker or under a settee. The 100mm netting compresses well and does not require a dedicated stowage space.
Dorcap

Frequently Asked Questions

Does the Dorcap fit my hatch? v
The Dorcap is built in two stock sizes. Medium fits hatch openings up to 20 inches wide, Large fits up to 24 inches. The compatibility table above lists common Lewmar, Bomar, Goiot, and Vetus fits. If your hatch is outside those ranges, send measurements and ATN can confirm before you order.
What is the difference between a Dorcap and a traditional dorade box? v
A dorade box is a cabintop housing that is bonded into the deck, fed by a cowl vent that must be cut into the deck. The Dorcap is a hatch-mounted boat hatch ventilator that delivers dorade behavior (rain rejection plus airflow) without cutting the deck. The Dorcap removes for storage. A dorade box does not.
Can the Dorcap be removed in storm conditions? v
Yes. Four corner snaps and the buckle-and-clip assembly come off in under five minutes. For named storms, take it down and close the hatch.
Will the Dorcap keep working in heavy rain, and can I open and close it from inside? v
Yes to both, on the Medium and Large. The "rain risk" setting is operable from inside the cabin so you can dial down the airflow when a squall starts without going on deck.
Does it install the same way on a forward-facing hatch and a stern-facing hatch? v
It is optimized for forward-facing hatches.
What is the optimal configuration with multiple Dorcaps? v
Many of our customers find that using at least two Dorcaps per side (on a multihull) gives optimal airflow. They typically mount either a Large over the forward and aft cabins, or a Medium over the bathroom and a Large over the cabins they want the most ventilation in.

From the sailing community

How does the Dorcap compare to a Davis Breeze Booster? v
The Davis Breeze Booster is fast to set up and take down, but Practical Sailor (Drew Frye) noted downsides including funneling twice as much rain below in a squall, vulnerability in 25-plus knot conditions, and instability in cross winds. The Dorcap is slower to install once, more stable once installed, and rain-tolerant.
Multihull Trampolines

Frequently Asked Questions

How long does a multihull trampoline net last? v
OEM nets often last as little as 2-4 years in the tropics. Our nets typically last from 5-12 years in the tropics depending on which material you select.
How do I measure my catamaran or trimaran for a replacement net? v
First, measure the net opening, NOT the net itself. Beyond that we strongly recommend just measuring the width of the opening forward and the length on the centerline if it's a single-piece net or the length along the edge closest to the centerline if it is a two-piece. Then send us these dimensions along with a picture showing your starboard net that is high resolution and wide angle so that we can see the entire perimeter and all the attachments points. We will be able to use this to generate a drawing that will show you the precise points to check to ensure a great fit.
What is the difference between SuperTramp, Dyneema, and Polyester DoubleRope nets? v
SuperTramp is ATN's in-house solid-fabric tramp with PTFE thread and reinforced grommet perimeter, built for maximum durability and comfort underfoot. Dyneema is the lightest, strongest option, used on racing multihulls and America's Cup catamarans. Polyester DoubleRope is the cruising-grade workhorse: lighter than SuperTramp, more comfortable than Dyneema, available in 22 mm or 30 mm mesh and in white, gray, or black.
How long does ATN take to ship a replacement trampoline net? v
Most ATN multihull nets ship in 2 to 4 weeks of order confirmation. Custom configurations, including the 50 mm Dyneema specialty racing build, add 1 to 2 weeks. US shipping is free; international flat rate is $150. We confirm a ship date by email after each order.
What if my boat model is not in your catalog? v
Use the quote form below with your boat's hole dimensions length by width in meters, your boat make and model, and the net material you want. We will respond within one business day with a quote. We also offer 50 mm Dyneema as a custom-order specialty for racing applications.
Why do some boats need an installation drawing for SuperTramp? v
SuperTramp is a solid-fabric tramp with grommets at fixed intervals, so the grommet pattern must match your boat's perimeter mounting line. For most production multihulls we have the pattern on file. For older or one-off builds we ask for a drawing so the grommets line up before fabrication.
Can I install the net myself, or do I need a rigger? v
Most owners install the replacement net themselves in a single afternoon. The install how-to article in ALL AT SEA Magazine, published by ATN founder Etienne Giroire, walks through the standard lashing pattern. If your boat has been modified or the original mounting hardware has been replaced, contact us before ordering so we can confirm dimensions.
Do the colored polyester nets cost more than white? v
Yes. Gray and Black 22 mm or 30 mm Polyester DoubleRope nets carry a 6 percent surcharge over the white base price. The surcharge reflects the colored-yarn cost differential.
Architectural Netting

Frequently Asked Questions

What is the difference between architectural netting and safety netting? v
Architectural netting is the broader category, used for design, dock fills, loft floors, ceiling decoration, and any other custom installation. Safety netting is one specific application: catching a fall (construction sites, climbing walls, balconies). All ATN architectural nets meet safety-application loading (SWL 350 kg/m2 on 30mm polyester, higher on SuperTramp), so the products overlap, but we do not claim to supply safety nets as those are regulated for fall protection which we do not claim.
Can ATN nets be used for residential loft and home applications? v
Yes. Loft floors, mezzanine safety, child playrooms, home-gym storage, and decorative ceilings are all standard ATN architectural net applications. Our gallery shows residential installs in Florida (multiple loft conversions), Quebec (children's playroom in a school), Long Island (rooftop terrace), and Palm Beach (family install).
What is the minimum and maximum size you make? v
Provide the actual opening dimensions you need to fill. Our design pass determines the right finished net dimensions based on material, application, and how taut you want the install. You enter the opening; we fabricate the net to fit. Minimum is roughly 3 ft x 3 ft (small balcony, decorative element). There is no hard maximum; our largest installs are over 30 ft per side. For a single net that needs to be larger than 25 ft x 25 ft we typically split into multiple panels with reinforced join lines.
What is the lead time on a custom architectural net? v
Triangle Dock Net kits ship in 4 weeks. Custom architectural and loft nets ship in 3 to 4 weeks. International freight adds 5 to 14 days transit.
Do you ship internationally? v
Yes. Recent international installs include Bahrain, Haiti, Quebec, and Tulum Mexico. International freight is typically DHL, FedEx, or USPS Priority Mail International, $75 to $325 USD on a Triangle Dock Net kit; large netting orders are quoted at order. We provide a proforma invoice with itemized item weights for customs. Any import duties or VAT in your country are the buyer's responsibility. For dealer or contractor purchases, see the Worldwide Importers page.
How do I order a custom architectural net? What do you need from me? v
Send us your opening dimensions (height x width, or a sketch with measurements), the application (loft floor, dock fill, decorative, etc.), the material preference if you have one (1" Black Dyneema, 13mm Polyamide, 22mm DoubleRope, 30mm DoubleRope, SuperTramp, or "you recommend"), the color preference, and your shipping address. The pricing calculator on this page gives you a live estimate. We return a proforma invoice. Payment confirms the order; production starts on the next batch day.
What is the warranty on ATN architectural nets? v
All ATN architectural net warranties are pro-rated and split outside / inside. 13mm Polyamide: 0 years outside (inside use only) / 5 years inside. 22mm DoubleRope Polyester: 3 years outside / 7 years inside. 30mm DoubleRope Polyester: 3 years outside / 7 years inside. SuperTramp: 7 years outside / 10 years inside. 1" Black Dyneema: 7 years outside / 10 years inside.
What is the warranty on ATN architectural nets? v
All ATN architectural net warranties are pro-rated and split outside / inside. 13mm Polyamide: 0 years outside (inside use only) / 5 years inside. 22mm DoubleRope Polyester: 3 years outside / 7 years inside. 30mm DoubleRope Polyester: 3 years outside / 7 years inside. SuperTramp: 7 years outside / 10 years inside. 1" Black Dyneema: 7 years outside / 10 years inside.
Multihull Awning

Frequently Asked Questions

What if I have an inner forestay or babystay?v
If you have an inner forestay or a babystay that adds a little complication to the awning design, but we can accommodate it. It typically adds about $350 to the cost, and we just need to know the location of that between your mast and your forestay at the shade height to properly design the awning around it.
What measurements do you need to quote a Multi Awning?v
Multi Awnings are custom-cut in our Pinellas Park, FL shop. To quote yours, we need the four measurements taken at 6 ft above deck: mast to headstay, port-to-starboard capshroud width, max bow pulpit width, and capshroud to pulpit fore-aft length. For Bali-style boats that attach to the coach roof rather than the capshrouds, the layout uses three through-bolted pad eyes. Pricing is by boat length; select your LOA from the dropdown above for an instant price, or request a quote and include your boat make / model / year.
Can you make a custom forward awning for my catamaran, and what materials are available?v
Yes. Every Multi Awning is custom-built for your boat from your four measurements at 6 ft (7 ft if you're on the tall side) above deck. The finished awning is cut about 10 percent smaller than the raw measurements so it sets up tight and quiet on a spare or spinnaker halyard. Choose shade material (breathable, water-passing, safe in a squall) or Sunbrella / TopNotch solid (water-repellent, needs to be set tight). Both run about 9 oz per yard.
Where do you ship to?v
We ship anywhere in the US for free. International orders require a freight quote; the shop will send the awning UPS or USPS Priority Mail International based on the destination country. For international shipping see the Worldwide Dealers page for a local routing option.
Shade material or solid material?v
Two options. Shade material is a breathable mesh; it lets water and most of the wind through, so you can leave it rigged in a squall and in trade winds. Solid material is Sunbrella or TopNotch; it repels water but needs to be set tight with good incline, and should be lowered above the rated apparent wind. Most customers choose the architectural shade mesh material for improved durability and the fact that it can be left up in higher wind conditions.
Which color do you want?v
Pick a name from the inline swatch grid above (e.g., "Charcoal Shade" or "Pacific Blue Solid") and include it on your quote or order. Physical color samples are available on request.
Press wording notev
For magazine editors and writers using the Multi Awning copy in a press piece: please contact the shop first so we can confirm current specs and supply a current product image. Etienne is happy to comment for press coverage.