Good evening:
This is a generic harbour tug from the peruvian SIMA slips. A very common design, similar to several spanish tugs.
Note: Drawing a small ship is a very challenging task! My praise to all the artists of the bucket that had drawn boats, yatchs, mtb, patrol launches, small harbour vessels, tugs, and Venice's vaporettis
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Credits: Thanks to Alvama. I tried to mimic the details of his anti-shock structures, the shading and several cabin details. Cheers.