{"product_id":"barton-size-3-4-1-boom-vang-system-snap-shackle","title":"Barton Marine Size 3 Vang System","description":"\u003cp class=\"nvn-hero\"\u003eThe Barton Size 3 vang system is a ready-to-rig 4:1 tackle for mid-size cruisers and daysailers. It ships professionally spliced with 24 feet of line and a snap shackle head, so you clip it on and go. Use it to tension the boom and flatten the main, or rig it to leeward as a boom preventer downwind.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eA boom vang is one of those bits of kit that quietly makes your boat sail better, and the Barton Size 3 is a clean, no-drama way to add one. It's a 4:1 tackle, professionally spliced and assembled in Whitstable, England, and it turns up ready to fit. You clip the snap shackle head on, lead the 24 feet of control line back to a cleat, and you're done. No splicing at the dock, no guessing at block sizes.\u003c\/p\u003e\n\u003cp\u003eSo what does it actually do? The vang runs from the base of the mast to a point along the boom, and it pulls down. That downward tension keeps the boom from lifting when you're sailing off the wind, which flattens the mainsail and stops the top of the sail from twisting off and spilling breeze. On a reach or a run, that's the difference between a main that's driving and one that's just flogging around. Sheet in on a beat and the mainsheet does most of the vertical work, but crack off past a close reach and the vang earns its keep.\u003c\/p\u003e\n\u003cp\u003eThe 4:1 purchase gives you enough mechanical advantage to set real tension by hand without a winch. For boats in the 26 to 32 foot range with a typical boom, that ratio hits the sweet spot. Big enough to hold the boom down in a breeze, light enough that you're not fighting it. If you're on something heavier with a long boom, size up. The right way to check is to look at your boom length and the load your existing vang sees, not just the boat's overall length. And remember the vang and your mainsheet work together. Keep the two in reasonable balance and the boom stays under control across the whole wind range.\u003c\/p\u003e\n\u003cp\u003eThe snap shackle head is the part you'll appreciate every time you use it. Barton's snap shackle fixings let you clip the vang on and pop it off in seconds, no tools, no shackle pins to drop in the bilge. That matters more than it sounds. A vang you can deploy fast is a vang you'll actually rig when the wind pipes up, instead of leaving it stowed because it's a hassle.\u003c\/p\u003e\n\u003cp\u003eHere's the part a lot of folks miss. This same tackle doubles as a boom preventer. Rig it from the boom forward to a fitting on the toerail or a padeye, and it'll stop the boom from slamming across in an accidental gybe on a downwind run. That's a genuine safety upgrade for shorthanded and cruising sailors. And because it's just a clean 4:1 tackle with snap shackles, you can pull it off entirely and use it as a handy billy, a general-purpose purchase for hauling, snugging down an awning, or lending a hand anywhere on deck you need to pull hard on something.\u003c\/p\u003e\n\u003cp\u003eRigging it is straightforward for anyone comfortable working on their own boat. You need a solid attachment at the mast base or gooseneck bracket and a matching point on the underside of the boom. Barton assembles and splices the tackle at the factory, so out of the box the block and tackle is done. Your job is the two end fittings and leading the tail to a cleat or clutch where you can reach it from the cockpit. If your current vang is tired or you've never run one, this is an easy afternoon job.\u003c\/p\u003e\n\u003cp\u003eA couple of honest notes. Keep an eye on the line where it exits the blocks over a long season, since that's where any control line eventually shows wear, and give the whole tackle a fresh-water rinse now and then to keep salt out of the sheaves. This is a cruising and daysailing vang, sized for mid-size boats. It's not a high-load racing rig-tension system and it's not meant for a big offshore boat with a heavy boom. Barton has been building sailing gear in Kent for decades, and better than 95 percent of what they make is manufactured in-house, so the quality stays consistent from one order to the next. For the boats it fits, it's a solid, well-made piece of British sailing hardware that'll serve you season after season.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e4:1 purchase ratio sets real boom tension by hand, no winch needed on a mid-size boat\u003c\/li\u003e\n  \u003cli\u003eSnap shackle head clips on and off in seconds with no tools and no loose pins\u003c\/li\u003e\n  \u003cli\u003e24 feet of control line, professionally spliced and assembled, arrives ready to fit\u003c\/li\u003e\n  \u003cli\u003eDoubles as a boom preventer to stop an accidental gybe on downwind runs\u003c\/li\u003e\n  \u003cli\u003eWorks as a handy billy for general-purpose purchase jobs around the deck\u003c\/li\u003e\n  \u003cli\u003eSnap shackle fixings for quick deployment and easy redeployment between jobs\u003c\/li\u003e\n  \u003cli\u003eBuilt by Barton Marine in Whitstable, England, with in-house quality control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Barton Marine reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat size boat is the Size 3 vang for?\u003c\/summary\u003e\n    \u003cp\u003eIt suits mid-size cruisers and daysailers, generally boats in the 26 to 32 foot range with a typical boom. The better way to size it is by your boom length and the load your existing vang sees, not just overall boat length. On a heavier boat with a long boom, step up a size.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the purchase ratio?\u003c\/summary\u003e\n    \u003cp\u003e4:1. That gives you enough mechanical advantage to set real downward tension on the boom by hand, without needing a winch.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long is the control line and does it come assembled?\u003c\/summary\u003e\n    \u003cp\u003eYou get 24 feet of line, and the whole tackle is professionally spliced and assembled at Barton's factory. It arrives ready to fit, so there's no splicing or rigging work at the dock.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the head fitting?\u003c\/summary\u003e\n    \u003cp\u003eA snap shackle. You clip it on and pop it off in seconds with no tools and no shackle pins to drop in the bilge.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use this as a boom preventer?\u003c\/summary\u003e\n    \u003cp\u003eYes. Rig it from the boom forward to a toerail fitting or padeye and it'll hold the boom out to stop it slamming across in an accidental gybe on a downwind run. That's a real safety upgrade for cruising and shorthanded sailing.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is a handy billy, and can this be one?\u003c\/summary\u003e\n    \u003cp\u003eA handy billy is a general-purpose block and tackle you keep on board for pulling jobs. Because this vang is a clean 4:1 tackle with snap shackles on the ends, you can pull it off the boom and use it that way anywhere on deck.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat do I attach it to?\u003c\/summary\u003e\n    \u003cp\u003eThe vang runs from a fitting at the base of the mast or the gooseneck bracket down to a point on the underside of the boom. You'll need suitable attachment points at both ends, then you lead the tail to a cleat or clutch you can reach from the cockpit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs the line included?\u003c\/summary\u003e\n    \u003cp\u003eYes. The 24 feet of control line is included and already spliced into the tackle. Nothing extra to buy to get it working.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhere is it made?\u003c\/summary\u003e\n    \u003cp\u003eBarton Marine builds it in Whitstable, England. Over 95 percent of Barton's gear is manufactured in-house there, which keeps the quality consistent.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan it also serve as a mainsheet or rig-tension tackle?\u003c\/summary\u003e\n    \u003cp\u003eIt's designed as a vang and boom preventer for mid-size cruising boats. It's not a high-load racing rig-tension system. Pair it with a balanced mainsheet setup and the boom stays under control across the wind range.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eBarton Marine Size 3 Vang System\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eBarton Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eN03900\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e5035088039005\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem Size\u003c\/th\u003e\n\u003ctd\u003eSize 3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePurchase Ratio\u003c\/th\u003e\n\u003ctd\u003e4:1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHead Fitting\u003c\/th\u003e\n\u003ctd\u003eSnap Shackle\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eControl Line Length\u003c\/th\u003e\n\u003ctd\u003e24 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eBoom Vang \/ Boom Preventer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAlternate Use\u003c\/th\u003e\n\u003ctd\u003eHandy Billy\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAssembly\u003c\/th\u003e\n\u003ctd\u003eProfessionally spliced and assembled\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDeployment\u003c\/th\u003e\n\u003ctd\u003eSnap shackle fixings, tool-free\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Location\u003c\/th\u003e\n\u003ctd\u003eWhitstable, England\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Category\u003c\/th\u003e\n\u003ctd\u003eSailing Rigging\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eProduct Video\u003c\/h2\u003e\n\u003cdiv class=\"nvn-video\"\u003e\n  \u003ciframe width=\"100%\" height=\"480\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/0ZI2EDCbsLw?autoplay=0\u0026amp;modestbranding=1\u0026amp;rel=0\" title=\"Product video\" frameborder=\"0\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What size boat is the Size 3 vang for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It suits mid-size cruisers and daysailers, generally boats in the 26 to 32 foot range with a typical boom. The better way to size it is by your boom length and the load your existing vang sees, not just overall boat length. On a heavier boat with a long boom, step up a size.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the purchase ratio?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"4:1. That gives you enough mechanical advantage to set real downward tension on the boom by hand, without needing a winch.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long is the control line and does it come assembled?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"You get 24 feet of line, and the whole tackle is professionally spliced and assembled at Barton's factory. It arrives ready to fit, so there's no splicing or rigging work at the dock.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the head fitting?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A snap shackle. You clip it on and pop it off in seconds with no tools and no shackle pins to drop in the bilge.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use this as a boom preventer?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Rig it from the boom forward to a toerail fitting or padeye and it'll hold the boom out to stop it slamming across in an accidental gybe on a downwind run. That's a real safety upgrade for cruising and shorthanded sailing.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is a handy billy, and can this be one?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A handy billy is a general-purpose block and tackle you keep on board for pulling jobs. Because this vang is a clean 4:1 tackle with snap shackles on the ends, you can pull it off the boom and use it that way anywhere on deck.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What do I attach it to?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The vang runs from a fitting at the base of the mast or the gooseneck bracket down to a point on the underside of the boom. You'll need suitable attachment points at both ends, then you lead the tail to a cleat or clutch you can reach from the cockpit.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is the line included?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. The 24 feet of control line is included and already spliced into the tackle. Nothing extra to buy to get it working.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Where is it made?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Barton Marine builds it in Whitstable, England. 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Pair it with a balanced mainsheet setup and the boom stays under control across the wind range.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Barton Marine","offers":[{"title":"Default Title","offer_id":44859409793117,"sku":"82875","price":255.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/82875XL.jpg?v=1785878551","url":"https:\/\/nvnmarine.com\/products\/barton-size-3-4-1-boom-vang-system-snap-shackle","provider":"NVN Marine","version":"1.0","type":"link"}