It is always wise to give sailboats a lot of space. Sailboats are usually the stand-on vessel.
Sailing has its own risks that require special care to avoid. Small sailboats are prone to capsizing and swamping. Know how to right the sailboat if it capsizes, and carry a bailer on board. Falling overboard is common. For that reason, sailors always should wear a life jacket (PFD). Sailors should stay aware of the water temperature. Capsizing in the early spring, the fall, or the winter involves the risk of hypothermia.
Remember that the mast can be a conductor for lightning. Be aware of masthead clearance when passing under power lines and bridges.