Atlanta 31 (Colvic) Information, Review, Specs

The Colvic Atlanta 31 began production in 1973. It was designed by John Bennett & Associates, who focused on creating a vessel that prioritized comfortable motoring and steady performance under sail, characteristic of a motor sailer. The builder, Colvic Craft, founded in 1964, was a pioneer in the early adoption of Glass Reinforced Plastic (GRP) construction in the UK, establishing a reputation for producing durable and seaworthy vessels. During the era of the Atlanta 31's production, Colvic Craft was known for its robust fiberglass work and for supplying many hulls to other manufacturers for completion, which could lead to variations in the final fit-out and interior layouts., 9, 16] The Atlanta 31 proved to be a popular choice, often considered a more accessible alternative to vessels like the Fisher 30.

Sailing Performance and Handling

With a displacement of 15,680 lbs and a length at the waterline of 28 feet, the Colvic Atlanta 31 is classified as a heavy displacement vessel, indicated by its Displacement to Length ratio of approximately 319. This heavy build contributes to its reputation as a "solidly built motor sailer with great sea keeping capabilities." Its Ballast to Displacement ratio of around 28.6% suggests a reasonably stable and stiff boat, capable of handling various conditions, and is noted for having excellent righting capability.

The reported sail area of 360 square feet for this ketch-rigged vessel results in a Sail Area to Displacement ratio of approximately 9.16. This low ratio indicates that the Colvic Atlanta 31 is "under powered" for light wind conditions, which is typical for a motor sailer, implying that engine assistance might often be desired for significant progress. However, owners generally describe its sailing performance as "quite good for a Motor Sailor," particularly appreciating its robust nature in stronger winds (Force 6 and above). The ketch rig configuration, with its divided sail plan, is also noted to offer improved comfort and stability when sailing downwind or on a broad reach.

Accommodations and Layout

The interior of the Colvic Atlanta 31 is praised for offering "considerably more internal volume with a more practical living" space compared to some contemporaries. Owners frequently note that there is "plenty of head room throughout," contributing to a spacious feel below deck. The design often includes an enclosed wheelhouse, providing significant protection from the elements, which is a desirable feature for extended cruising or colder climates. While specific interior layouts could vary due to Colvic's practice of supplying hulls for completion, typical arrangements usually include a functional galley, a comfortable saloon, and sleeping berths. Owners often undertake refits, with many boats featuring updated fabrics and modern conveniences.

Owner's Perspectives

Owners of the Colvic Atlanta 31 consistently highlight its strong construction and robust build quality as primary strengths, affirming Colvic Craft's reputation for producing durable vessels. 7, 10, Builder Article The boat's excellent seakeeping abilities and comfortable motion in a seaway are frequently praised, making it a favored choice for those undertaking extended cruising or seeking a secure platform in challenging conditions. The engines commonly installed, such as Thornycroft, Beta Marine, or Lister-Petter, are often described as reliable and easy to maintain. While acknowledged as being "under powered" under sail in lighter winds, this is generally accepted by owners who view the vessel primarily as a motor sailer. The generous interior volume is another key strength, offering more practical living space. There are no widely reported systemic weaknesses or common maintenance issues beyond the general upkeep expected of a well-used fiberglass yacht of its age. Owners often form strong communities to share knowledge and maintenance tips, reflecting the enduring appeal of these classic cruisers.