Powerboat Designs for Sportfishing and Cruising

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Powerboat Designs for Sportfishing and Cruising

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Finesse 20

$105.00

An efficient, outboard-powered, foam cored center console for inshore fishing

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The Finesse 20 features a large, open cockpit that should accommodate a couple of anglers with ease. An elevated casting platform forward features storage under. Just forward of the console is another under deck storage area. The console is simple and straightforward with room for full instrumentation. The top of the console is large enough to mount a depth sounder, compass and GPS. The pedestal seats shown could be replaced by a cooler seat or a leaning post. Just aft of the seats is another storage area for the battery and oil tank. The bilge pump is aft under a deck plate. More storage is outboard of the motor in the stern.

The hull design is a simple modified vee. The beam was kept a relatively narrow 7 1/2 ft. to promote efficient planing. Many new production boats are as much as a foot wider and generally are not very efficient boats to operate. The fine entry (45 degrees at station 1) flattens to 15 degrees at the transom. The chine flats are wide and angled down for good stability and a dry ride.

The hull is cored with either Corecellâ„¢ or Airex foam®. The cockpit sole is cored with balsa. The stringers (one per side) are 1/2″ plywood encapsulated in glass. The transom is cored with 1 1/2″ of plywood. Coring the stringers and transom with foam would save 100 pounds or so, but would add hundreds of dollars to the construction costs. The small weight penalty of the plywood is more than offset by its low cost and stiffness. That being said, if a customer should want an all glass boat, I’d be happy to oblige.

The easy planing hull shape and lightweight construction should make the Finesse 20 a very efficient fishing boat. While most 20′ boats are powered by 150-200 hp; the Finesse 20 should run 38-40 mph with only 90 hp. Due to her low weight and easily driven hull, fuel economy should be excellent. The recommended power range is 70-100 hp.

The Finesse 20 was not designed for first-time builders, but for experienced amateurs or the small professional shop. The plan set is not very large and does not include patterns. This design may need to be lofted.

SKU: Finesse20 Category: Tag:
Weight 5 lbs
Dimensions 92 × 21 × 21 in
Plans

Plan Set

Specifications

LOA: 20′-2″ (6.15m)
DWL: 16′-6″ (5.03m)
Beam: 7′-6″ (2.29m)
Draft (Keel): 11″ (279 mm)
Displacement: 2,300 lbs. (1,043 kg)
Fuel Capacity: 50 gals. (189 L)
Deadrise: 15 Degrees
Freeboard (Fwd): 39″ (991 mm)
Freeboard (Aft): 26″ (660 mm)
Power: 70-115 hp Outboard
Construction: Foam Cored GRP

Study Plans

Study plans are available below as downloadable PDF files. Please remember that these plans are the property of Smith Marine Design and should not be used for any purpose without my written consent.

Laminate Section

Profile and Arrangement

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