On Wed, 30 Dec 2009 08:46:19 -0800 (PST), max camirand
wrote:

Come to think of it, since the only major force operating on these
portlights is a hypothetical boarding wave, I could have outside-
opening portlights of thick plexiglass. If the portlight window were
of a larger diameter than the porthole, it would merely be forced
against the hull by a boarding wave. The plastic window itself is more
than strong enough.

Regards,
-Maxime

Or you can fit "storm boards" over the ports in bad weather.

The "problem" that most people have with ports is that they leak. I've
seen a lot of people cursing and re-bedding their ports. Never saw a
guy replacing one that a wave broke :-)

Cheers,

Bruce
(bruceinbangkokatgmaildotcom)