1961 Bertram 31 Flybridge Cruiser

Bertram 31 Flybridge Cruiser: The Deep-V Legend That Defined Offshore Sportboats

1. General Information

Few production powerboats carry the reputation of the Bertram 31 Flybridge Cruiser. Built from 1961 to 1983, with a small run of Silver Anniversary editions in 1986, this 9.32-metre classic is the original deep-V Bertram and one of the most celebrated sportboats of its generation. More than 2,000 Bertram 31s left the yard in several configurations, and the Flybridge Cruiser remains a sought-after choice on the used boat market thanks to its rugged build and exceptional rough-water manners.

The ideal owner is a hands-on coastal cruiser or offshore angler who values seakeeping above outright luxury. Below deck, a modest but cleverly arranged cabin offers a V-berth forward, a convertible dinette, a compact galley and an enclosed head, which is ample for weekends aboard for a couple or a small family. Fuel capacity of up to 840 litres provides useful coastal range, while the flybridge gives a commanding view for navigation and spotting fish.

2. Construction and Design

Designed by C. Raymond Hunt, the hull pioneered the deep-V concept with a 23° deadrise aft, allowing the boat to slice through head seas with a softness few 30-footers of its era could match. Built in solid fibreglass, the hull is renowned for its durability, and many examples are still running decades later, often after a repower. A beam of 3.40 metres and a draft of only 0.94 metres balance stability with access to shallower anchorages.

Interior finishes are simple and practical, built to withstand hard saltwater use, while the 1986 anniversary editions added warm oak joinery. Comfort is functional rather than plush, and in a stiff breeze the ride can be wet, a typical trait of the narrow deep-V hulls of the period.

3. Key Features

Pioneering deep-V hull: The 23° deadrise delivers the outstanding rough-water seakeeping that made the Bertram name famous.

Open, uncluttered cockpit: Cushioned engine boxes double as seating, and the clear deck suits both fishing and entertaining.

Flybridge helm: The elevated steering position offers excellent all-round visibility for coastal navigation and fishing.

Twin-engine performance: Twin 330 hp MerCruiser petrol engines give a cruising speed of 22–24 knots and a top speed above 30 knots, with GM, Caterpillar and Cummins diesels offered as options.

Practical cabin layout: A V-berth, convertible dinette, galley and enclosed head make overnight trips comfortable in a compact footprint.

4. Summary

The Bertram 31 Flybridge Cruiser is aimed at buyers who want a proven, seaworthy classic rather than the latest gadgets. It suits sport fishermen heading offshore, coastal cruisers who need a boat that copes with real sea conditions, and enthusiasts drawn to restoring a true icon of American boatbuilding. With strong owner support and enduring resale value, it remains one of the most respected 30-foot sportboats ever built.