Downwind Sailing
Spinnaker Sleeve
Hoist and douse your spinnaker safely with one person, in any sea state. The original ATN design — used on the 2023 Transpac overall winner. Symmetric, asymmetric, and cruising chutes all work.
Trusted Offshore. Proven Worldwide.
Sailing Equipment
Sailing Equipment
Built for Real Conditions
ATN designs and manufactures the Spinnaker Sleeve, Tacker, Gale Sail, Genoa Sleeve, and Mastclimber — trusted by offshore sailors and shorthanded crews in more than 40 countries since 1985.
Our Products
The ATN Product Line
Every ATN product solves a specific problem faced by shorthanded and offshore sailors. Each is engineered to perform when conditions are worst.
Shorthanded Sailing
Tacker
The ATN Tacker makes your headsail self-tacking — no more releasing and re-cleating sheets in a tack. Fits boats up to 45 feet and works with existing roller-furling systems. Ideal for solo and shorthanded sailing.
Heavy Weather Safety
Gale Sail
A purpose-built storm sail that sets directly on your furled headsail — no hanks, no hardware changes. Deploy in minutes in the worst conditions. The only storm solution designed for roller-furling boats.
Sail Protection
Genoa Sleeve
Full circumferential UV protection for your furled genoa. Replaces UV tape and partial bolt-rope strips with a complete, removable sleeve in your choice of 10 colors. Extends sail life dramatically.
Rig Maintenance
Mastclimber
Climb your mast solo without help from the dock or crew. The ATN Mastclimber uses mechanical cam-lock ascenders on any standard halyard to let one person safely ascend and descend at any height.
About ATN
Forty Years of Solving Sailors' Real Problems
ATN Inc. was founded in 1985 by sailors who understood that the best sailing equipment is equipment that works when conditions are worst. Every ATN product was developed in response to a specific problem — a spinnaker that couldn't be doused shorthanded, a headsail with no storm backup, a mast that couldn't be climbed solo at anchor.
Today ATN products are used on everything from club racers to world-voyage passage makers. The same design principles apply to all of them: simple, robust, reliable, and effective without requiring extra crew.
Etienne Giroire, ATN's founder and chief designer, has continued to refine each product over four decades of real-world sailor feedback. When you call ATN, you often reach someone who has actually sailed with the gear.
Read Our FAQs →
Race Proven
Used on the 2023 Transpac Overall Winner
The ATN Spinnaker Sleeve isn't just for cruisers. The 2023 Transpac Race overall winner flew their spinnaker using an ATN Sleeve for the entire 2,225-mile race from Los Angeles to Honolulu — and won.
When race teams trust equipment with their campaign, it tells you something about the engineering behind it.
See the Spinnaker Sleeve →
What Sailors Say
Trusted Offshore and Around the World
"The Spinnaker Sleeve is the single best piece of equipment I have added to my boat in 20 years. I can now fly the spinnaker solo in 20 knots and douse it in under two minutes."
Verified ATN Customer
"The Gale Sail gave us real peace of mind on our Atlantic crossing. We deployed it once off Biscay in a Force 9. It set perfectly in under five minutes. We couldn't have managed without it."
ARC 2022 Participant
"The Mastclimber is extraordinary. I went up 57 feet solo, repaired a broken spreader boot, and came back down — all at anchor with no one on deck. Absolutely no other product does this."
Verified ATN Customer
Common Questions
Frequently Asked Questions
What is an ATN Spinnaker Sleeve and how does it work?
The ATN Spinnaker Sleeve is a fabric tube that encases your spinnaker for safe,
easy hoisting and dousing — even shorthanded. Hoist the spinnaker inside the sleeve,
then pull the sleeve up to unfurl the sail. To douse, pull the sleeve down to capture
the sail instantly. ATN's reinforced hoop design prevents jamming.
What size Spinnaker Sleeve do I need?
Size by the luff length of your spinnaker in feet (head to tack). Order that length.
Pricing is per linear foot — you pay for the length you need. If you're between sizes,
round up. Full sizing guide on the product page →
What is the ATN Gale Sail and do I need one?
The Gale Sail is an emergency storm headsail that deploys directly onto your furled
roller-furling sail — no hanks, no forestay access required. If you sail offshore or
in areas prone to heavy weather and your boat has a roller-furling headsail, the Gale
Sail is the only practical storm sail solution available.
Learn more about the Gale Sail →
Can I climb my mast alone with the ATN Mastclimber?
Yes. The ATN Mastclimber is designed for solo use with no one on deck. Using two
mechanical cam-lock ascenders on any standard halyard, you alternate standing and
sitting to ascend safely. It descends under controlled friction.
See how the Mastclimber works →
How do I contact ATN for a custom order or technical question?
Call (408) 842-5548 or email
info@atninc.com. ATN has staff who sail
and can answer technical questions about sizing, installation, and compatibility
with your specific rig.
Ready to Sail More Confidently?
ATN equipment is in stock and ships quickly. Call us if you have questions — our team sails and knows the gear.