Hi Deepstar I have added some photos of the afon, the hull you can get from mobile marine models, the tugs in the photos
are twin screw with bow thruster fitted, one built in Glasgow a member of Glasgow Richmond Club the other just down the road
in Yorkshire Balne Moor m.b.c. I don't know if you are into towing but this hull lends it's self to twin screw this is only my opinion.
Regards
John
PS Both these tugs are fitted with bow thrusters, hope this is some help.