- Reaction score
- 8,330
- Points
- 1,160
One should at least put the equipment through reasonable shock/heat/waterproof testing (depending on it's criticality within the ship) before you stake your life on the gear.
For civilian projects on shore, (food processing plants no less) I have regularly spec'd commercially supplied electronics and enclosures that can be wetted with a 2" hose ( NEMA 4), submerged for their service life (NEMA 6P), be guaranteed to be explosion proof (generate no sparks), be shock resistant, operate in environments of +50C to -50C, and have clients expect 10 to 25 years of useful life operating 24/7.
They also don't appreciate being told not to worry if things go wrong - there's always insurance. In addition to the increased premiums, there is loss of revenue generating production time, loss of reputation and market share, not to mention law suits from disappointed customers, as well potentially from upset neighbours and from affected employees and their families.
So much for what I do know about the Spec issue.
Now for what I don't know - when dealing with vessels with large open spaces (bulk carriers, ferries, RoRos, transports, LHDs, Aircraft Carriers, Multi-Role vessels etc) just how much compartmentalization can be supported? In such vessels is it as useful to have highly compartmentalized crew and machinery spaces (even in civvy ships the machinery spaces are isolated) when you have an open deck 2-3 levels high running from stem to stern and across most of the beam?