Toy Tug Boat

This is a toy tug boat I designed to make for my nephews and nieces for Christmas. I have a duel extruder on my Ultimaker so part 1 is one color and part 2 is the other. Its 165 mm form bow to stern but scales well. I have printed it at 30mm, 80, mm and 160mm. If you make one please post a pic. This is my first build so let me know what you think.
V2 has sloped sides.
V2 Updated 10/20/2014. Noticed deck walls at boats widest point were a little thin.
V2 Updated 10/22/2014 removed gap be