Seastream 43 Sailboats for Sale & Market Overview

Designed by the prolific Ian Anderson in 1981, the Seastream 43 is a quintessential British bluewater cruiser that pioneered the deck saloon concept well before it became an industry standard. Built primarily by Southern Boatbuilding Co. in Southampton, with high-end interior joinery often completed by Rival Yachts, the vessel was engineered for long-distance autonomy and comfort. With a robust displacement of approximately 31,526 pounds and a purposeful, high-freeboard profile, the Seastream 43 was marketed as a "yacht for all seasons," capable of providing a temperate living environment in both high-latitude and tropical climates. The model saw three distinct iterations—the Mark I, Mark II, and Mark III—and served as the foundation for the lengthened Seastream 465. Other notable siblings in the Ian Anderson-designed range include the smaller Seastream 34 and the flagship Seastream 650.