MARINER 31

About the MARINER 31

The MARINER 31 was the first fiberglass hull built by Far East Yachts. The decks and cabintrunk were of plywood covered with fiberglass. Similar to MARINER 32 and FUJI 32.

The Mariner 31 is a rare, single-year production vessel designed by C. Oberly and built by Far East Yachts (JAP) in 1968, with an unknown total hull count. Its authoritative specifications confirm a 30.67 ft LOA, 11500.0 lb displacement, and a distinctive Masthead Ketch rig, positioning it as a substantial, heavy-displacement cruiser from the late 1960s.

Best for:

This boat suits experienced cruisers seeking a traditional, heavy-displacement ketch for coastal or protected offshore passages, particularly those who value the stability of a 5000.2 lb ballast ratio and are prepared to maintain vintage systems.

Bluewater capability:

With a high displacement of 11500.0 lb, a low capsize ratio of 1.73, and a full/long keel, the Mariner 31 possesses strong inherent stability and seakeeping characteristics suitable for offshore cruising.

Comparables:

Comparable boats include other heavy-displacement ketches from the late 1960s such as the Cal 3-35 or O'Day 35, which share similar full/long keel designs and moderate sail area-to-displacement ratios (15.19 SA/D).