Just added two new engines, both designed for real boats.

Swan 2 twin No.5a
LINK

Cygnet single cylinder No.5a
LINK

Just added the S 50
LINK

also
Added some more info I came across.
LINK

Just added a nice video link to the S 50 page.

Added two new engines, the Twin 7a and the Ninety
Twin 7a LINK .
Ninety LINK

Just added the Compressor / Vacuum pump.
LINK

just added the Score, horizontal version of the No.D10
LINK