Hi!,only just joined and the first time I have posted a message, not sure if this will help you I came across this site while searching for model tug drawings:-
www.rnkeo.com its a company site that has a fleet consisting of 9x tankers 75.000 tdw - 319.000 tdw, 7x Panamax Bulkers 75,000 tdw, 20 container vessels 14,000 - 34,000 tdw the site offers some plans of some of their vesels with good specs and photo's.
Good luck.
Algy, (Warrington UK.) :-)