The coloring page in this picture shows a trawler boat sailing out to sea. The boat is bright yellow and blue, with a large open deck area that has been designed to drag a net through the sea to catch fish. The boat has one large rectangular window and a small ladder that leads up to the boat's deck. The boat has two big masts and the deck is separated from the hull by a railing.
To color the boat in this picture, you could use shades of yellow and blue for the boat's main body, and you could use different kinds of brown to bring out the details of the masts. For the deck area, you could use different shades of gray to add depth and texture to the scene. You could also create a realistic sea setting by coloring in the sky with a light blue, transitioning to a deeper blue for the sea. You could finish off the scene by adding some details like fish swimming around the boat or some waves rippling around it.