Core Sound 21

Description

The CS-21 was inspired by the iconic Harkers Island style work boats. This center console design features the famous Carolina flare and a modified V bottom shape for a comfortable and stable ride while maintaining a spacious interior. This boat is designed for use inshore and near shore.

This boat is built using cold molding and is recommended for those with some boat building and/or wood working experience. The design is available as a pre-cut jig or full size patterns, both options include detailed assembly drawings, making it easy to build a boat of your own.

Specs:

• 21.5′ LOA
• 8′ beam
• 8.5″ draft @ 2000 lbs
• 150hp max
• Cruise 30-35mph

Materials:

• Jig Kit: 5 sheets marine grade plywood 1/2” x 4′ x 8′ (stringers, transverse frames, bulkhead and transom)
• Jig Kit: 2 sheets standard plywood 1/2” x 4′ x 8′ (temporary structure)
• Bottom: 10 sheets of marine grade plywood 3/8” x 4′ x 8′
• Sides: 10-11 sheets of marine grade plywood 1/4” x 4′ x 8′
• Floor & Gunnel: 8 sheets of marine grade plywood 1/2” x 4′ x 8′
• Ceiling (optional): 4 sheets of marine grade plywood 3/16” x 4′ x 8′
• Strongback: Pine Qty 2 – 2” x 6” x 16′, Qty 1 – 2” x 6” x 12′, Qty 1 – 2” x 6” x 8′, Qty 7 – 2” x 4” x 8′
• Keel: Douglas Fir Qty 2 – 2” x 4” x 8′
• Sheer: 200 linear feet of Juniper or Fir 3/4” x 1” & 100 linear of Juniper or Fir at 1/2” x 1”
• Rib Bands: 150 linear feet of Juniper or Fir 3/4” x 1”
• Chine: 100 linear feet of Juniper or Fir 3/4” x 3” OR can 3/4” marine plywood cut in 8′ strips
• Sheer Bumper: 120 linear feet of Fir or Sapelle 1/2” x 1-1/2”
• Spray Rail: 100 linear feet of Fir or Sapelle 3/4” x 1-1/2”
• Floor Supports: 200 linear feet of Juniper or Fir 1” x 1”
• Resin: 25 gallons of marine grade epoxy resin (DO NOT USE POLY OR VINYL ESTER RESINS)
• Glass: 200 linear feet of of 1208 or 1700 bi-axial fiberglass 50” wide
• Filler: 5 lbs of fumed silica or similar for fillets

More Questions about Boat Building?  Check out our FAQ