A boat drawn from above and a boat drawn from the side can use similar arrows to show very different relationships. Begin a study session by identifying the viewpoint.
Look for clues in the drawing
Can you see the outline of the deck, the side of the hull or the boat end-on? Read the caption rather than relying only on your first impression. A simplified diagram may omit features that would normally make the view obvious.
Write “view from above” or another supported description beside your notes. If the viewpoint remains unclear, make that your first question.
Separate different kinds of arrow
Use the legend to identify what each arrow represents. Do not treat an arrow showing movement as interchangeable with a label pointing to a part. Keep any uncertain symbol unlabelled until you can verify it.
In an invented study sketch, a line may indicate a viewing direction rather than a force. Its meaning comes from the explanation, not from the fact that it has an arrowhead.
Redraw only what you understand
Make a simple copy with the viewpoint and two or three confirmed labels. Ask an instructor about the unresolved parts before applying the diagram in practice.
This approach complements reading a points-of-sail diagram. A clear frame of reference gives the later vocabulary somewhere reliable to sit.