{ "slug": "open-water-swimming-safety-checklist", "url": "https://checklists.org/open-water-swimming-safety-checklist", "markdown": "https://checklists.org/open-water-swimming-safety-checklist.md", "title": "Open Water Swimming Safety Checklist", "description": "A checklist for staying safe before, during, and after open water swimming in rivers, lakes, and the sea.", "category": "safety", "tags": [ "open-water-swimming", "cold-water-safety", "water-safety" ], "version": "1.0", "updated": "2026-07-24", "sources": [ { "name": "RNLI: Open Water Swimming Safety Advice And Tips", "url": "https://rnli.org/water-safety/choose-your-activity/open-water-swimming" }, { "name": "Swim England: How To Stay Safe In Open Water", "url": "https://www.swimming.org/openwater/how-to-stay-safe-swimming-outdoors/" }, { "name": "RoSPA: Cold Water Shock Safety", "url": "https://www.rospa.com/water-safety/cold-water-shock" }, { "name": "National Water Safety Forum: Open Water Swimming Guidance", "url": "https://nationalwatersafety.org.uk/water-safety-england/guidance-for-the-public/open-water-swimming" } ], "intro": "Open water swimming can be rewarding but carries real risks from cold water shock, currents, and changing conditions. This checklist covers preparation, gear, safe entry, in-water awareness, and emergency response.", "itemCount": 25, "essentialCount": 9, "sections": [ { "title": "Choose and Research Your Swim Spot", "items": [ { "id": "1dnvgob", "text": "Check conditions before you go", "note": "Always check the weather, tide and currents before you set off.", "essential": true }, { "id": "1vmwjec", "text": "Ask local clubs or lifeguards about the specific venue", "note": "If you're swimming in a new area, ask for advice from local open water swimming clubs." }, { "id": "b17m86", "text": "Identify entry and exit points before entering the water", "note": "Include a backup exit if current or tide pushes you off course." }, { "id": "7bz1o1", "text": "Note water temperature for the season", "note": "Open water in the UK can remain very cold all year round, even if the weather is warm.", "when": "year-round-in-uk" }, { "id": "1ssmglq", "text": "Avoid swimming alone", "note": "Swim with company, it's safer.", "essential": true }, { "id": "uf7une", "text": "Avoid entry due to possible blue-green algae bloom risk", "note": "Applies if visiting a lake or reservoir with visible scum, discoloration, or a musty smell.", "when": "visible-scum-discoloration-or-musty-smell" } ] }, { "title": "Gear Up", "items": [ { "id": "6a89n4", "text": "Wear a wetsuit", "note": "It'll help you stay warm and can increase your buoyancy, so you can stay in the water for longer, and will keep you warmer and reduce the risk of shock." }, { "id": "r5x0qu", "text": "Wear a brightly coloured swim hat for visibility to other water users and rescuers", "note": "Wear a brightly coloured swimming hat and take a tow float with you when sea swimming or dipping." }, { "id": "8wf3t7", "text": "Take a tow float", "note": "Provides a resting point and makes you visible to boats and lifeguards." }, { "id": "qcnmte", "text": "Carry a means of calling for help", "note": "You should always carry a means of calling for help when sea swimming or cold water dipping, this could be a mobile phone in a waterproof pouch.", "essential": true }, { "id": "mdw56h", "text": "Install a tracking app such as RYA SafeTrx", "note": "It can track your swim and alert emergency contacts if you fail to return home on time.", "when": "swimming-regularly-or-in-remote-spots" } ] }, { "title": "Enter the Water Safely", "items": [ { "id": "m37pn0", "text": "Enter gradually", "note": "On entry, cold water causes you to gasp followed by increasing breathing and heart rate; you should get in slowly, and take 60–90 seconds to regain control of your breathing before putting your face in or swimming out of your depth.", "essential": true }, { "id": "1hh1pyf", "text": "Know the cold water shock threshold", "note": "Cold water shock is a physical response to rapid entry into water that's 15°C or lower.", "essential": true }, { "id": "1i1e8dp", "text": "Recognize that fitness offers no protection", "note": "Cold water shock can happen to anyone, even if you're fit and healthy, and it can happen in any kind of open water: the sea, rivers, lakes and lochs." }, { "id": "xa1wzr", "text": "Limit time in cold water and build tolerance gradually rather than plunging into long swims from the start", "note": "Enter the water gradually and limit your time in cold water." } ] }, { "title": "While Swimming", "items": [ { "id": "rlwq9s", "text": "Fight the instinct to swim hard if shocked", "note": "If this happens, fight your instinct to swim, turn onto your back and tilt your head back in the water, submerging your ears, relax and try to breathe normally, using your hands to help you stay afloat, wait until the shock passes then call for help or swim to safety.", "essential": true }, { "id": "1rhlqn5", "text": "Rest on your back if tired", "note": "When open water swimming, you might get tired, roll on to your back to rest and hold on to something that floats, like your tow float, then you can signal for help if needed." }, { "id": "1cbz6k3", "text": "Watch for cold-water symptoms in yourself and companions", "note": "Entering cold water very quickly can cause you to find yourself gasping for air and breathing up to 10 times faster than normal, which can cause a heart attack even if you're in good health.", "essential": true }, { "id": "psut7f", "text": "Sight regularly toward your exit point or a fixed landmark", "note": "Helps avoid drifting off course, especially in tide or current." }, { "id": "nzj6no", "text": "Bail out at the first sign something feels wrong", "note": "If a swim doesn't feel right there is no shame in getting out of the water straight away, or not entering.", "essential": true } ] }, { "title": "In an Emergency", "items": [ { "id": "v3pl6x", "text": "Call for coastguard/emergency help immediately if you or someone else is in trouble", "note": "In case of an emergency, call 999 or 112 and ask for the coastguard.", "essential": true }, { "id": "2kp17a", "text": "Keep trying even without signal", "note": "If you don't have any mobile phone signal, don't panic, you can still try calling 999 or 112, even if your own mobile phone network has no coverage, as your phone will try to connect to any other network available." } ] }, { "title": "After the Swim", "items": [ { "id": "15s3nva", "text": "Rewarm gradually with warm (not hot) drinks and dry layers", "note": "Avoid alcohol immediately after cold swims, as afterdrop can continue lowering core temperature for up to 30 minutes post-exit." }, { "id": "6dho6n", "text": "Debrief with your swim buddy on any hazards spotted", "note": "Currents, debris, wildlife — to inform future trips." }, { "id": "9q3o3v", "text": "Review and reset your plan for next time", "note": "Reconfirm tides/weather rather than assuming yesterday's conditions still apply, since conditions should always be checked before you set off for each swim." } ] } ] }