Make sure everyone in your family learns to swim.
Small children can drown even at a depth of 10 cm. Never allow them to swim unsupervised.
Before diving, check the water depth and bottom conditions.
Try not to stay or swim in places with fast currents. Try not to swim alone. Avoid swimming in areas with heavy annual boat traffic.
If you decide to sail far, someone should accompany you in a boat with the necessary life-saving equipment. Never enter the water or boat while intoxicated.
Do not stand upright in a small boat. When boating, especially in cold weather, always wear a life jacket. Have some kind of life-saving device ready.