<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div>This section is a summary of loads to be considered when</div><div>designing your submersible.</div><div>A load plan is to be submitted for the pressure hull, external loads</div><div>& internal loads. <span style="font-size: 14pt; background-color: transparent;">Section 4 F, table 4.2 has a summary of 35 relevant loads </span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt; background-color: transparent;">& the tests </span><span style="font-size: 14pt; background-color: transparent;">required. The tightness tests (leak test by pulling a vacuum) are </span></div><div style="color:
rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt; background-color: transparent;">at .2 bar </span><span style="font-size: 14pt; background-color: transparent;">below atmospheric pressure.</span></div><div>The relationship of the nominal diving pressure ( maximum operating depth )</div><div>the test pressure & collapse diving pressure, are dependent on the depth </div><div>you build for. For instance, down to a depth of 165 ft the test depth is 1.7</div><div>times operating depth, & the designed collapse depth should be 3.2 x the</div><div>maximum operating depth. <span style="font-size: 14pt;">Down to 330 ft it is 1.4 & 2.4 Down to 660 ft it is </span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica,
Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt;">1.25 & 2.</span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt;">Section 4 F, table 4.2 has a summary of 35 relevant loads & the tests</span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt;">required. The tightness tests (leak test by pulling a vacuum) are at .2 bar</span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style:
normal;"><span style="font-size: 14pt;">below atmospheric pressure.</span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt;">Alan</span></div><div><br></div></div></body></html>