Always swim close to shore and avoid areas where boating is heavy. Do not swim alone away from the boat. It might be a good idea to tie a line to the boat with a life ring or type four throwable device attached. A tired swimmer could reach this and he or she could pull himself or herself back to the boat. Be sure to get the line back on board prior to getting underway to avoid getting it fouled in your prop.
Be alert for swimmers in the water. Don’t assume that they will always restrict themselves to designated swim areas.
Be particularly careful when approaching an anchored or drifting boat. There may be swimmers in the area.