{"id":16955,"date":"2026-03-30T17:55:56","date_gmt":"2026-03-30T17:55:56","guid":{"rendered":"https:\/\/manuals.seakeeper.com\/ride\/mechanical-installation-manual-750-1500-copy\/6-measure-transom-angle\/6-2-hulls-with-unique-stern-features\/"},"modified":"2026-04-01T14:40:49","modified_gmt":"2026-04-01T14:40:49","slug":"6-2-hulls-with-unique-stern-features","status":"publish","type":"page","link":"https:\/\/manuals.seakeeper.com\/ride\/mechanical-installation-manual-750-1500-375a-and-525a\/6-measure-transom-angle\/6-2-hulls-with-unique-stern-features\/","title":{"rendered":"6.2 Hulls with Unique Stern Features"},"content":{"rendered":"\n<p>For many planing hulls, the aft portion of the running surface is straight, however, there can be exceptions where there is a curvature, angle, or twist just forward of the transom. This may be referred to as a stern wedge, hook, or rocker. These types of features are generally added to the hull to improve handling characteristics or induce a constant trim, adding a bow down moment during normal running conditions.&nbsp;<\/p>\n\n\n\n<p>Be sure to use a 3-ft (0.9 m) straight edge along the hull bottom when evaluating the transom angles to obtain a correct assessment of the running surface.&nbsp;<\/p>\n\n\n\n<p>If the Seal Plate were to be installed following the same angle as a stern wedge, it would create a permanent additional upward force in the aft of the boat, and the bow would be pushed down irreversibly. This incorrect assessment for installation is demonstrated below.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"766\" height=\"542\" src=\"https:\/\/manuals.seakeeper.com\/ride\/wp-content\/uploads\/image-492.png\" alt=\"\" class=\"wp-image-13982\" style=\"width:766px;height:auto\"\/><figcaption class=\"wp-element-caption\">Figure 41 \u2013 Incorrect Assessment of Running Surface<br><\/figcaption><\/figure>\n<\/div>\n\n\n<p>Measure the angle of the transom over a greater length of the running surface up to 3-ft (0.9 m) to ensure the proper angle.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"719\" height=\"509\" src=\"https:\/\/manuals.seakeeper.com\/ride\/wp-content\/uploads\/image-493.png\" alt=\"\" class=\"wp-image-13983\"\/><figcaption class=\"wp-element-caption\">Figure 42 \u2013 Correct Assessment of Running Surface with an Extra Long Straight Edge<br><a href=\"https:\/\/manuals.seakeeper.com\/ride\/seakeeper-ride-mechanical-installation-manual\/7-measure-transom-angle\/7-1-measurement-steps\/\"><\/a><\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>For many planing hulls, the aft portion of the running surface is straight, however, there can be exceptions where there is a curvature, angle, or twist just forward of the transom. This may be referred to as a stern wedge, hook, or rocker. These types of features are generally added to the hull to improve [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":0,"parent":16949,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"manual":[375],"model":[],"document_type":[],"hidden":[],"class_list":["post-16955","page","type-page","status-publish","hentry","manual-mechanical-installation-manual-750-1500-375a-and-525a"],"acf":[],"_links":{"self":[{"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages\/16955","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/comments?post=16955"}],"version-history":[{"count":1,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages\/16955\/revisions"}],"predecessor-version":[{"id":17065,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages\/16955\/revisions\/17065"}],"up":[{"embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/pages\/16949"}],"wp:attachment":[{"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/media?parent=16955"}],"wp:term":[{"taxonomy":"manual","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/manual?post=16955"},{"taxonomy":"model","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/model?post=16955"},{"taxonomy":"document_type","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/document_type?post=16955"},{"taxonomy":"hidden","embeddable":true,"href":"https:\/\/manuals.seakeeper.com\/ride\/wp-json\/wp\/v2\/hidden?post=16955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}