boatbuildlog

Design

Class AB

Designed by Glen-L Marine

A 10 ft 6 in racing runabout from Glen-L Marine drawn to the old APBA A and B classes, no longer active, in which straightaway runs over 60 and 70 mph were recorded. Monoplane bottom, flaring anti-trip sides, cut-away bow, minimal frontal area. Sheet plywood, about 110 lb; plans and patterns or a frame kit. Glen-L publish a hull depth of 13 1/2 in.

The hull is a feature high speed monoplane bottoms with wide, flaring, anti-trip chine sides. Canted decks combined with wedge-shaped planform minimizes frontal resistance. All surfaces are developed for sheet plywood planking for minimum weight. For power they specify over 7.5 through 15 cu. Simple, light and strong construction. Budget 120 to 220 hours. Real hours from logged builds show below.

What building a Class AB actually takes

Medians from the build logs kept on this site, not the designer’s estimate. Nobody has logged this boat here yet, so they are empty until the first builder does.

0
Build logs
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Launched
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Median hours
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Median months

Those medians firm up as more people log this boat.

Builds of this boat

Nobody has logged a Class AB here yet.

If you are building one, yours becomes the reference: the page the next person building this boat finds when they search for it. One photo and one line is a valid first entry.

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Boats like this one

Same type, closest in length.

Design Plans from LOA Logs
Broadbill 11 Devlin 10′ 8″ (3.25 m) 0
Mini Tunnel Dillon Racing 10′ 3″ (3.12 m) 0
Super Spartan Glen-L Marine 10′ 2″ (3.1 m) 0
EZ Tunnel Dillon Racing 10′ 10″ (3.3 m) 0
Silver 333 BCA Demco 3.33 m (10′ 11″) 0
Fish Hook John Welsford 3.05 m (10′ 0″) 0