取悦哥哥用英语怎么说

A drawing of a boat is called a "sketch" or a "drawing" of a boat. You can also describe it as a "representation" or an "illustration" of a boat. Here are some examples of how you might use these words:
"I made a sketch of a sailboat on the lake."
"She drew a beautiful picture of a yacht."
"This painting is a representation of a ship at sea."
"The illustration in the textbook shows a tugboat pulling a barge."