The thought of accidentally sinking after being damaged makes every skipper shudder at his probable helplessness in staying afloat. Sooner or later, yachtsmen will demand positive flotation for all boats through 65 feet in length. What should the Naval architect be doing and what can the builders expect in new materials and arrangements for flotation?

This paper will review the state­of-the-art and encourage further research and planning by attempting to show a need, feasibility considerations, and fringe benefits.

Flotation after damage for ballasted yachts has, for years, been only a dream because of lack of flotation space in sailboat hulls that are already volume critical, as compared with similar length power boats. It is hoped that few low density materials, as available, and arrangement considerations in the original design will make his safety feature a reality.

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