Funny how this boat reappears about every other year.
The original manufacturer of that boat is ScaleSpeed, http://www.scalespeed.com/taikoo_en.htm
Do contact him, and post his reply, let us know if it is any different than the previous posts or replies(2007).
There are now other manufacturers of this class of tug in different scales, so you may have better luck than
others in the past have had.
HONG KONG HARBOR TUG TAIKOO TAI KOO MAI PO