Okay, not everything I saw at the show was electronic. These deckplates for one, which instead of the familiar screw or snap in action, have a kind of T-bar on the bottom, and a screw mechanism which pulls the deckplate tight, compressing a gasket with the surface. They can be mounted on a bare hole—no external mounting ring is needed—so installation is very simple. They are robust enough that I’m considering them for bulkhead access to watertight crash compartments on Sweet Destiny. There are 8, 10, and 12 inch circular models (opening dimension is 1.25 inches smaller), and an 11.25 by 21.25 rectangular version. They are available directly from Armstrong, (800-226-7204).

Link: Armstrong Nautical Deckplates