The 2001 Eastern 31 (often called the Eastern 31 Casco Bay) is a Downeast-style fiberglass powerboat built by Eastern Boats in Milton, New Hampshire. It is a recreational/cruising version of a proven semi-displacement hull design descended from the earlier JC 31 workboat, which was popular for commercial use along the New England coast.

Design and Hull

Naval architect Royal Lowell designed the hull, featuring a graceful sheer, hard chines, and a long prop-protecting keelfor good tracking and protection in shallow or rocky waters. It is a semi-displacement hull that balances efficiency, load-carrying ability, and seakeeping. These boats have a strong reputation for handling rough conditions (such as chop and bigger seas) well for their size, making them popular for coastal cruising, fishing, and day trips in areas like Casco Bay, Maine.

Key dimensions (approximate, can vary slightly with options/configurations):

• LOA: ~31'–31'4"
• Beam: ~11'–11'3" (around 11.17 ft in some listings)
• Draft: ~3'6"
• Displacement: ~12,000 lbs (dry weight)
• Headroom: ~6'4" in the cabin