Located in Rochester, New York on the Genesee River near Lake Ontario. Get Directions

Photo © 2008 Tim Wilkes / www.timwilkes.com

Sonar Specifications

Sonar Logo

Key Specifications

Length Overall (LOA) 23' Displacement 2,100 lbs.
Waterline Length 19'11" Ballast 900 lbs.
Maximum Beam 7'10" Sail Area (Main & Jib) 250 sq. ft.
Draft 3'11" Sail Area (Spinnaker) 245 sq. ft.

Sonar Drawing
Sonar Cross Section
Sonar Overhead
Sonar Deck
Click on any image to view a larger version.

General Construction

Hull Hand laid up woven fiberglass with coremat coring for added strength and impact resistance. Each boat carefully crafted to meet one-design rules. White gelcoat standard; custom hull gelcoat colors and bottom paint optional.

Deck Fabricated as one-piece insert; includes three seat storage lockers. Two bunks (and space for a small Porta Potti) in lockable cuddy cabin with hatchboard. Extruded aluminum toerail bolted thru deck and hull flange.

Cockpit Huge 11'6" self-bailing cockpit with full-length seats, angled seatbacks. Seats 8 adults in comfort. Adjustable mainsheet traveler amidships.

Keel 900 pounds of cast lead, deep fin design. Narrow, with advanced foil shape for superior windward performance. Optional sling available for hoist launching.

Rudder 2" thick, very high-aspect and deep. Balanced design and large area provides excellent control and manueverability, even under spinnaker in strong winds. Inboard hung for protection and to retain the same light feel at all angles of heel. Laminated curved tiller.

Rigging Bendy tapered aluminum mast. 75% fractional rig is responsive, makes sailhandling easier. Elliptical mast section is keel stepped. Swept spreaders, adjustable backstay and moveable mast blocking at the partners permit fine tuning. Running rigging is Dacron and Spectra, cut to length and fitted for each application.

Sails Large Dacron mainsail and 100% jib, legal for class racing. Combination of larger main and smaller jib is easier to handle when tacking. Standard cunningham, outhaul, traveler controls and jib leads provide complete sail-shaping ability. Spinnaker and tapered aluminum pole available.

Hardware Boat is shipped "race ready," equipped with top-quality marine hardware -- Harken, Ronstan, etc. Deck and cockpit fittings are mounted with stainless steel hardware.

Trailer Optional trailer with brakes, custom designed and built for the Sonar, is available.

Shumway Marine
40 Marina Drive • Rochester, NY 14617 • 585.342.3030 or 800.433.2518
www.shumwaymarine.com • email: info@shumwaymarine.com