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The Biggest Mistakes When Swimming the Combat Swimmer Stroke (CSS)

Kickoff in pool.

For a while I have been coaching and critiquing young men and women learning proper military swim techniques. Usually they're seeking programs in the military that require an underwater recovery stroke for the entrance fitness test and/or requires swimming with fins during training. These programs include: Navy SEAL, Navy EOD, Navy SWCC, AF PJ / CCT PAST, and Navy Diver. 

The goal of any Spec Ops swimming test is to meet an above average standard. This doesn't require beating up water for 500 yards or meters, but mastering the right technique so you are more efficient in the water.  The best way to learn the Combat Swimmer Stroke (CSS) is to have someone show it to you in person. Video instruction is second best, and still photos are near useless when trying to learn a very fluid movement like swimming.

Here are a few areas where people tend to go wrong with this stroke and swimming in general:

Pace

You have to start off with a nice, steady pace.  If you start a 500 yard swim at near sprint capacity and you are not a competitive swimmer with super strong conditioning, you will last about 100yds before the wheels fall off the wagon. Train your goal pace with every swim. 

For instance, my training group focuses on a minimum standard of one yard a second for 50 yards, which results in a time of 50 seconds. If you can maintain this pace, you will finish a 500yd swim in 500 seconds, or an 8:20 in other words. This is an above average, competitive swim in the Spec Ops swim training world. Sure, there are some who will get below 8 minutes or even break 7 minutes, so you can always keep improving. 

Note: Usually swimmers and water polo players are the ones breaking 7 minutes on this test. See two swimmers do entire 500yd swim and watch their pace maintenance throughout the swim. Both non-swimming athletes are swimming in a 7-8 minute time zone.

Body Position

This is the biggest issue people have, and it is usually a problem of popping your head up to breathe instead of turning your head to breathe as you would with the free style swim stroke.

In fact, this stroke is really a mix of freestyle (top arm pull and breathing), breaststroke (bottom arm pull and general timing), and side stroke (body positioned on your side and scissor kick).  Although, you can use a breast stroke kick if you prefer. The scissor kick is preferred as you will have to transition this stroke into the CSS with fins, and that will require scissor and flutter kicks. 

See how lifting the head out of the water affects body position in the water. Keep the head down and think like a screwdriver in the water, not a see-saw.

Timing

The first thing a beginner should pick up is the general timing of the stroke. Knowing how to sequence the stroke into the following elements is key:  top arm pull, bottom arm pull and breathe, kick and recover the arms back to the streamline position. 

The Combat Swimmer Stroke is really just a nickname for a modified side stroke. This stroke utilizes the top arm pull like a freestyle pull instead of the shorter stroke of the elementary side stroke. The timing is a bit different as well as you will see in this video of a near perfect timing of the stroke and glide.

Once you get the pace, body position, and timing down of the stroke, you may need a few minor adjustments to fix the kick, arm pull, exhale underwater, and glide, but those are easy fixes. The issues I mentioned earlier take time to learn and master in order to reach competitive scoring zones.

See the three part breakdown of the CSS to fully understand how the pull, breathe, kick, and glide all work together to make an efficient stroke that makes no splashes or silhouettes the swimmer. In this world, stealth and efficiency matter.

To get to the training, you need to know how to swim without fins. To get through the training, you will need to add fins. See video of how to use the CSS with fins to keep your swims efficient so you can go for miles.

Stew Smith works as a presenter / editorial board with the Tactical Strength and Conditioning program of the National Strength and Conditioning Association and is Certified Strength and Conditioning Specialist (CSCS).  There are also over 800 articles on Military.com Fitness Forum focusing on a variety of fitness, nutritional, and tactical issues military members face throughout their career.

Latest Fitness Books: Navy SEAL Weight Training and Tactical Fitness

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Contributor

Stew Smith works as a presenter and editorial board member with the Tactical Strength and Conditioning program of the National Strength and Conditioning Association and is a Certified Strength and Conditioning Specialist (CSCS). He has also written hundreds of articles on Military.com's Fitness Center that focus on a variety of fitness, nutritional, and tactical issues military members face throughout their career.

Latest Fitness Books: Navy SEAL Weight Training and Tactical Fitness

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