This is a simple 3D model based on the Benchy concept. It requires supports, so you can test your printer's support capabilities too. Below, you can see some things to look for in the print.

Rounded Faces

Test how your printer does with built-up rounded faces, overhanging rounded faces, and straight rounded faces.

Overhanging Travel

Test how your 3D printer does on overhanging travel (drool).

Overhangs and Arches

Test your printer's capability to print overhangs and arches. 

Symmetrical Model

Test your printer's levelness and see how it does as far as skew.

Sloped Surfaces

See how good your printer is at printing slopes. The smokestack is an inverted slope, while the cowcatcher is a typical one.

Bridging 

Find out how good your printer is at bridging. The bottom overhang can be printed with supports, but the top overhang should be printed without them. 

Enjoy the model, and happy printing!