**Surface Tension:**

<https://www.dictionary.com/browse/surface-tension>

The elasticlike force existing in the surface of a body, especially a liquid, tending to minimize the area of the surface, caused by asymmetries in the intermolecular forces between surface molecules.

A razor blade also can be supported by the surface tension of water. The razor blade is not floating: if pushed through the surface, it sinks through the water.

<https://www.dailymail.co.uk/news/article-2190033/Incredible-shot-US-swimmer-perfectly-shows-phenomenon-surface-tension.html>

Surface tension is also viewed as the result of forces acting in the plane of the surface and tending to minimize its area. On this basis, surface tension is often expressed as an amount of force exerted in the surface perpendicular to a line of unit length. 

**Reducing Surface Tension:**

Limit the size of the area engaged with the surface.

If there is any oil or oily compounds on the free surface of the water, then surface tension will be reduced.

Shaving down - oiling up - speed suits

**Monday -**

<https://www.goswim.tv/app/lessons/633fb611efb683328357da01>

:48 - compare surface area

1:30 - start

3:45 - end

**Tuesday -**

<https://www.goswim.tv/app/lessons/633fb611efb683328357db38>

:07 - flat

:11 - rotate

:16 - rotates to the other side

:20 - rotation under - look at how much of the body engages the surface

:22 - more of the body engaged with the surface

:25 - very little surface engagement

Is a sub faster than a surface ship

Nobody knows for sure, but the answer is probably yes. Because a large surface ship is limited by physics to a maximum speed of approximately 1.4 times the square root of the waterline length. Power requirements increase exponentially as you approach that limit.

So a frigate with a waterline length of 225’ has a maximum displacement speed of 21knots. In practice they can go a bit faster because they can partially plane, and if they are very narrow-beamed, the factor will be larger than 1.4.

A vessel wholly submerged is subject to different limitations. It is quite likely that nuclear submarines are capable of 40 knots or more, but only when submerged.

But the real truth is a military secret.

<https://www.wired.com/2014/08/how-we-can-get-submarines-to-travel-at-supersonic-speed/>

**Wednesday -**

<https://www.goswim.tv/app/lessons/633fb611efb683328357d3b2>

Water had to be sped up

:04 - Flat

:09 - Rotate

:10 - Extend and speeds up

Three things - low surface area - longer vessel - narrower front end

:16 - flat.. goes backward

:19 - extends and moves forward

**Thursday -**

<https://www.goswim.tv/app/lessons/633fb611efb683328357d164>

1:50 - Position 11 - which is flat

1:52 - rotate everything

2:04 - rotate everything

2:10 - bring the hand across and allow the weight shift to occur

3:55 - rotate everything

4:12 - swim slowly

4:20 - rotate everything

4:27 - swim slowly

4:33 - rotate everything

4:41 - swim slowly while adding breaths

4:59 - back to rotate everything and review

5:20 - rotate and play with balance

**Friday -**

<https://www.goswim.tv/app/lessons/633fb611efb683328357d939>

1:50 - push off and set up ONE stroke

1:52 - hold the line as long as you can

1:57 - hold the line as long as you can

2:06 - 2 strokes

2:15 - 2 strokes

2:24 - 4 strokes

2:33 - 8 strokes

2:50 - swim

\*\*Saturday - \*\*

<https://www.goswim.tv/app/lessons/633fb611efb683328357d290>

:50 - snap from side to side

:56 - spend as little time as possible in the rotation

:59 - snap from under

1:08 - over rotation of the head for the breath

1:15 - get the upper shoulder UP

**Sunday -**

<https://www.goswim.tv/app/lessons/633fb611efb683328357d285>

:03 - very rotated

:04 - what is engaged with the surface?

:06 - what is engaged with the surface?

:07 - same question

:12 - look at the head

:13 - nearly the entire body underwater

:17 - the transition from one side to the other occurs underwater

:20 - underwater

:28 - rotation

**BONUS**

**Freestyle – Disappear Behind Your Hand**

<https://www.goswim.tv/app/lessons/633fb611efb683328357d633>

**Tow Rope Core Stability**

<https://www.goswim.tv/app/lessons/633fb611efb683328357d5b4>

[https://nzcordz.com/product/safety-cord-short-belt-strechcordz/](https://nzcordz.com/product/safety-cord-short-belt-strechcordz/#dailyvideo)

[#dailyvideo](https://nzcordz.com/product/safety-cord-short-belt-strechcordz/#dailyvideo)


Sign In to watch video

Oct 24, 2022 Escaping Surface Tension in Freestyle