{"title":"Selden Heeling Test — Instructions","description":"\u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/om-manual-v2.css\"\u003e\u003cstyle\u003e.mpom .om-tbl.nw td+td{white-space:nowrap}.mpom details.om-dd{position:relative;margin:0}.mpom details.om-dd\u003esummary{list-style:none;cursor:pointer}.mpom details.om-dd\u003esummary::-webkit-details-marker{display:none}.mpom .om-dd-menu{position:absolute;left:0;top:calc(100% + 6px);min-width:100%;width:max-content;max-width:360px;background:#fff;border:1px solid #e3e5e8;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.14);z-index:30;padding:6px}.mpom .om-dd-menu a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:10px 12px;border-radius:4px;font-size:14px;font-weight:600;color:#2a2b2a!important;text-decoration:none!important}.mpom .om-dd-menu a:hover{background:#f5f6f8}.mpom .om-dd-menu small{font-weight:400;color:#5f6368;white-space:nowrap}\u003c\/style\u003e\u003cdiv class=\"mpom\"\u003e\n\u003cdiv class=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"om-tag\"\u003eINSTRUCTIONS\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eHow Selden runs a heeling test at the jetty to measure a yacht's righting moment: the halyard \/ \"heeling wire\" method for boats up to about 10 tons, and the main boom method for heavier yachts.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003eSelden Heeling Test Instructions\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 2 pages · 0.1 MB\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\" style=\"border-bottom:0\"\u003e\n\u003cspan\u003eLanguage\u003c\/span\u003e\u003cb\u003eEnglish\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-acts\"\u003e\u003cdetails class=\"om-dd\"\u003e\u003csummary class=\"om-btn dl\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 4v11\"\u003e\u003c\/path\u003e\u003cpath d=\"m7 10 5 5 5-5\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 20h14\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Download PDF ▾\u003c\/summary\u003e\u003cdiv class=\"om-dd-menu\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Heeling-Test-Instructions.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eInstructions\u003c\/span\u003e\u003csmall\u003ePDF · 2 p.\u003c\/small\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Heeling-Test-Main-Boom-Method.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eHeeling test using the main boom\u003c\/span\u003e\u003csmall\u003ePDF · 1 p.\u003c\/small\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-method\"\u003eChoosing the Method\u003c\/a\u003e\u003ca href=\"#om-procedure\"\u003eHalyard Method\u003c\/a\u003e\u003ca href=\"#om-boom\"\u003eMain Boom Method\u003c\/a\u003e\u003ca href=\"#om-equipment\"\u003eEquipment\u003c\/a\u003e\u003ca href=\"#om-products\"\u003eProducts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Heeling-Test-Instructions-Cover.png\" alt=\"Selden Heeling Test — Instructions\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-method\"\u003e\n\u003ch2 class=\"om-h\"\u003eWhich Heeling Device\u003c\/h2\u003e\n\u003cp\u003eCarry out the test on a fairly calm day at a jetty with a strong point of attachment for the heeling wire.\u003c\/p\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBoat displacement\u003c\/th\u003e\n\u003cth\u003eHeeling device\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u0026lt; 2 ton\u003c\/td\u003e\n\u003ctd\u003eOrdinary 4:1 purchase rope tackle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u0026lt; approx. 4 ton\u003c\/td\u003e\n\u003ctd\u003e4:1 tackle tensioning one end of a 2:1 tackle (8:1 purchase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u0026lt; approx. 10 tons\u003c\/td\u003e\n\u003ctd\u003eWire tensioned by a mechanical device\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAbove 10 tons\u003c\/td\u003e\n\u003ctd\u003eMain boom method (595-577B-E, second download)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eHeeling wire tension is approximately displacement divided by fore-triangle height (Newton, meter). Allow an extra 20%, as the initial tension is greater than the tension at 30 degrees of heel. When reading the balance, relieve the rope tail to get a correct value of the force P.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block om-grid2\" id=\"om-procedure\"\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eSetting Up\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eClose all outlet valves and secure loose items. Check that the mast is properly tuned.\u003c\/li\u003e\n\u003cli\u003eFit a large bow shackle around the forestay (tape it if the stay has a head foil). On masthead rigs the backstay is an alternative.\u003c\/li\u003e\n\u003cli\u003eGenoa (main) halyard to the top of the shackle, heeling wire and a measuring tape (no shorter than the mast) to the bottom. If in doubt about the halyard snap shackle, connect with a bar shackle.\u003c\/li\u003e\n\u003cli\u003eAttach a second \"deck measuring tape\" where the mast meets the deck.\u003c\/li\u003e\n\u003cli\u003eHoist until the shackle is approximately 10 cm below the wire terminal. The shackle must not rest on the foil during the test.\u003c\/li\u003e\n\u003cli\u003eMeasure from the top of the heeling wire to the deck tape attachment (Hm). Fit the spring balance between heeling wire and jetty.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eHeeling \u0026amp; Recording\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eHeel the boat by tensioning the heeling wire. Pushing the boat away from the jetty reduces the initial tension. People operating the tensioning device wear hard hats.\u003c\/li\u003e\n\u003cli\u003eFor each reading: heeling wire vertical, boat floating freely; record horizontal distance mast – heeling wire (Mbm) and wire tension (P).\u003c\/li\u003e\n\u003cli\u003eHeel to both starboard and port. 30 degrees of heel corresponds to Mbm = 0.5 × Hm (sine 30° = 0.5).\u003c\/li\u003e\n\u003cli\u003eMeasure the vertical distance from the deck tape attachment to the water level (h2).\u003c\/li\u003e\n\u003cli\u003eLet the boat return slowly; release the heeling wire quickly when nearly upright.\u003c\/li\u003e\n\u003cli\u003eEstimate fuel, water and equipment on board, measure the chainplate locations and complete the righting-moment calculation in the report.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-boom\"\u003e\n\u003ch2 class=\"om-h\"\u003eHeeling Test Using the Main Boom\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMax. heeling angle will be 10°: secure loose items, check the mast is properly tuned.\u003c\/li\u003e\n\u003cli\u003eSwing the boom out in running position, secured by mainsheet and a preventer to the stemhead; protect it from the lateral rigging.\u003c\/li\u003e\n\u003cli\u003eHeeling device (tackle or mechanical) at the boom end. A heeling force of 2-3% of the yacht's displacement is required.\u003c\/li\u003e\n\u003cli\u003eSuspend the boom end 1.5-2m above level with main halyard and\/or topping lift (spinnaker halyard for extra stiffness).\u003c\/li\u003e\n\u003cli\u003eThe spring balance must be the only connection between device and jetty. Measure the horizontal distance from the yacht's centreline to the heeling device.\u003c\/li\u003e\n\u003cli\u003eHeeling angle: two bars of 700-1000mm, the lower one fixed across the deck near the mast, the upper one held level with a spirit level; measure distance H (vernier callipers recommended).\u003c\/li\u003e\n\u003cli\u003eInitial heel at 50kgs (100 lbs) on the balance, then 100, 200, 300kgs etc. Minimum heeling must be 5°, corresponding to an H-measurement of 9% of bar length \"b\".\u003c\/li\u003e\n\u003cli\u003eHeel to both starboard and port, enter all values, estimate tankage and equipment, enter chainplate locations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block om-grid2\" id=\"om-equipment\"\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eHalyard Method\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeeling wire, tackles or wire + tensioning device\u003c\/li\u003e\n\u003cli\u003eSpring balance\u003c\/li\u003e\n\u003cli\u003eShackles\u003c\/li\u003e\n\u003cli\u003eSome pieces of strong rope\u003c\/li\u003e\n\u003cli\u003eTwo measuring tapes (20m)\u003c\/li\u003e\n\u003cli\u003eAdjustable spanners, pair of pliers\u003c\/li\u003e\n\u003cli\u003eHard hats\u003c\/li\u003e\n\u003cli\u003eBosun's chair\u003c\/li\u003e\n\u003cli\u003eAdhesive tape\u003c\/li\u003e\n\u003cli\u003eForm and pencil\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eMain Boom Method\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeeling device (tackle or mechanical device)\u003c\/li\u003e\n\u003cli\u003eSpring balance\u003c\/li\u003e\n\u003cli\u003eSpirit level\u003c\/li\u003e\n\u003cli\u003eMeasuring tape\u003c\/li\u003e\n\u003cli\u003eMeasuring scale or vernier callipers\u003c\/li\u003e\n\u003cli\u003eTwo bars, length 700-1000mm (wood, aluminium etc.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eNeed a part that isn't listed? \u003ca href=\"\/pages\/contact\"\u003eAsk us to source it\u003c\/a\u003e and quote the part number from the PDF.\u003c\/p\u003e\n\u003ch2 class=\"om-h\" id=\"om-products\"\u003eProducts in this Manual\u003c\/h2\u003e\n\u003c\/div\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/Selden-Heeling-Test-Instructions-Cover.png?v=1792517217","url":"https:\/\/www.mauripro.com\/collections\/owners-manuals-selden-heeling-test.oembed","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}