Dave Baker wrote:

Anyone know of any pitch/roll sensors that are designed specifically for
measuring pitch & roll in vessels? The units that I have found apparently are
more for static applications, and are affected by acceleration, so are not
accurate in dynamic situations.

Try this for a start. There are several manufacturers of electrolytic
sensors and I am sure you can get what you need in just about any output
configuration.

http://www.microstrain.com/FAS-E.htm

You might also try and contact BP Oil Shipping, they installed strain
monitoring on their Alaska tankers a few years ago.

Rick