Catamaran that looks nice and is ideal for bath time.  It floats well and moves easily through the water.

Print the hull standing up, no supports required.

Attach the hulls to the bridge,  the fit was made tight intentionally as I didn't want it falling apart in the bath tub. Best to do this yourself and not let a child assemble it.

There are Lego stubs on the bridge that allow you to mount Lego mini-figures.

The hull is printed using with PETG as a sealed object. It is possible for water will leak into the object over extended use. It's not a concern for me as interest in toys typically don't extend over a few months.

Hope you like it.