National Center for Cold Water Safety
Swim Test Your Gear
Every Time You Go Out
Sea Kayaker Rich Stevens swim testing his gear in 40F (4.4C) water - Cold Water Safety Workshop, Annapolis, Maryland.
Why You Should Swim Test
Swim-testing is like a pilot's preflight inspection - a last minute safety-check to make sure you're wearing enough thermal protection and that it's working properly.
How to Swim-Test
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Put on your thermal protection, get in the water, and splash around.
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Sit, float, tread water, or swim - whatever works best for you.
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Hold your nose and see how it feels to get your head dunked.
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How long you stay in the water is up to you - it's your gear that you're testing.
Do I really have to swim-test my gear every time I go out?
That's up to you. It's a very good idea, but no one will force you to do it.
Cold Water Safety Workshop - Annapolis, MD - 2016 - Water 40F (4.4C)
Valuable Things You Can Discover By Swim Testing
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These mistakes really do happen. Sometimes they're amusing, sometimes they're merely unpleasant, but every once in a while - if you don't catch them before you get out on the water - they can be fatal.
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Your drysuit has a torn gasket.
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You forgot to close the "relief zipper" on your drysuit.
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You forgot to properly close the main zipper on your drysuit.
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You should have paid more attention to the instructions on how to seal your two-piece drysuit.
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All by itself, your drysuit provides about as much insulation as a shower curtain, and you need to find some nice warm stuff to wear underneath it.
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The gear you're wearing on this particular outing is totally inadequate to keep you warm in the water.
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You didn't burp your drysuit enough, so you feel like a blimp in the water.
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You burped your drysuit way too much and squashed all that fluffy pile insulation down to the thickness of a penny and now it doesn't feel warm any more.
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You were sadly mistaken when you thought that a "paddling jacket" was the same thing as a "drytop".
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Your neoprene gloves or the wrist seals on your drysuit are a wee bit too snug. They reduce the flow of warm blood to your hands - which are quickly becoming very cold.
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You need to get a neo hood, a neo hat - or both - to protect your head and neck from that chilly water.
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The 3mil farmer john & drytop combo that was just fine and dandy at 65F, is not nearly enough to keep you warm at 48F.
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The wetsuit you got on sale is too large. You're trying to compensate by wearing a thick polypro top and bottom underneath it, but whenever you move, very cold water flushes in and out, causing you to squeal like a little piggy.
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Pro Tip
How To Get An Expert "Feel" For Cold Water
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Experienced cold water paddlers have a remarkable "feel" for cold water. Give them a water temperature, and they know - without even thinking about it - exactly how much protection they need to paddle safely and comfortably at that particular temperature.
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Swim-testing embeds that kind of cold water data in your brain - over and over again. You can learn a lot from that process, and the knowledge really sticks with you.
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You'll develop a feel for cold water a lot faster if you make a habit of measuring the water temperature every time you swim-test. Measuring it yourself is better than hearing your buddy say "47 degrees" because you learn better by doing than by hearing.
What if I don't want to swim-test?
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That's not a good sign. Swim-testing is no big deal when you're dressed for the water temperature. If you're unwilling to swim-test, it's usually because you don't think your gear will keep you warm and/or dry when you're in the water.
Reasons people give for blowing off swim-tests.
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They don't happen to have any cold water gear with them at the moment.
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Their gear is brand new and they're too nervous to try it out.
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Their nasty, old, worn-out gear is shot to hell, and they have a strong gut-feeling that it won't keep them warm - even during the swim-test.
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Their gear is just perfect for the air temperature, but way too skimpy for the water temperature.
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It's windy and cold at the launch site, and they don't want to get in the water.
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They're worried about getting cold and wet.
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The water at the put-in is so skanky with scum, oil slicks and dead fish that it takes a major commitment to just put their pretty boat in the water.
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Bottom Line
The real issue for most paddlers isn't whether they swim-test every single time they paddle. It's that they never swim-test their gear and consequently have no idea whether it's working properly and will protect them out on the water.
Read the close call and fatal incidents associated with Rule 4