Elon Musk indicated that the SpaceX Super Heavy Booster will use welded, internal, longitudinal hat stringers [to support its structure when unpressurized]. To the degree it may need hoop stiffness ...

The venerable Bertram Yachts brand was born when founder Dick Bertram decided to build on his well-earned reputation as an ocean sailor and as the victor in the 1960 Miami-to-Nassau powerboat race.

Boatbuilders who survived the recession-driven 80 percent drop in new boat sales face a much more competitive market. With less expendable income and less ready to part with it, boat-buying customers ...