As we do our research, we occassionally run across a boat such is this:

http://www.yachtworld.com/core/listi...d=37464&ur l=

Though I'm sure maintenance on these commercial boats has been secondary
to their operation, their price would seem to allow for some work to
bring maintenance up to current (would that be around $50k or so?).

But being purposefully built commercial fishing boats, they would seem
to need a lot of work to convert them for liveaboard / personal cruising.

So, using this boat (or one similar) as an example, what would it
generally take (typical time, money and effort) to convert a fishing
trawler to a liveaboard cruising trawler? (and is a Cat 3408 a good
diesel for this application?)