Coast Guard UTBCoast Guard UTB model. The UTB is designed as a first response rescue resource in high seas, surf &, heavy weather environments. They are built to withstand the most severe conditions at sea and are capable of effecting a rescue at sea even under the most difficult circumstances. They are self bailing, self righting, almost unsinkable, and have a long cruising radius for their size. Mahogany Wood. Scale: 1 32. Length 18 inches.