On Wed, 4 Jan 2012 10:19:37 -0800, "Califbill"
wrote:

Lots of twins less than 10' wide. My buddy has a duel diesel jetboat that
is less than 10' w. 25' long.

===

Lots of diesels suitable for that kind of boat are straight 4s or 6s,
much easier to cram in side by side than big block V-8s.