<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div id="yiv7320916847"><div><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 14pt;"><div id="yiv7320916847"><div id="yiv7320916847yui_3_13_0_ym1_1_1386136859721_2431"><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 14pt;" class="yiv7320916847yui_3_13_0_ym1_1_1386136859721_2403" id="yiv7320916847yui_3_13_0_ym1_1_1386136859721_2430"><div id="yiv7320916847"><div id="yiv7320916847yui_3_13_0_ym1_1_1386065276172_2456"><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial,
'Lucida Grande', sans-serif; font-size: 14pt;" class="yiv7320916847yui_3_13_0_ym1_1_1386065276172_2397 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2404" id="yiv7320916847yui_3_13_0_ym1_1_1386065276172_2455"><div id="yiv7320916847"><div id="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2441"><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 14pt;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2362 yiv7320916847yui_3_13_0_ym1_1_1386065276172_2398 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2405" id="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2440"><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502"><br></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502">I'm afraid there is nothing simple in this section. It is lacking in a lot of specifics.</div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502">There
are statements such as "shall generally meet the standard
defined</div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502">in the following unless special operational restrictions reflected in the class</div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502">notification allow a lower level. & ...Depending on the type of submersible & the </div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502">operation area, the distance
between the waterline in fully surfaced condition</div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502">and the upper edge of entrance openings, air pipes,etc. which may be open</div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502">for surfaced operation, has to be approved by G.L.</div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502"> ABS has a minimum distance from the waterline to the hatch opening of 30"</div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502">whereas G.L. states; <span style="font-size: 14pt;">For
surfaced; </span><span id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_3357" style="font-size: 14pt;">a minimum </span><span id="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2486" style="background-color: transparent; font-size: 14pt;">distance between metacentric height & center of gravity </span><span id="yiv7320916847yui_3_13_0_ym1_7_1386063901473_17" style="background-color: transparent; font-size: 14pt;">of 10cm. (4") </span><span id="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2596" style="background-color: transparent; font-size: 14pt;">And for submerged, a minimum distance between center of buoyancy </span><span id="yiv7320916847yui_3_13_0_ym1_7_1386063901473_21" style="background-color: transparent; font-size: 14pt;">& center </span><span id="yiv7320916847yui_3_13_0_ym1_1_1386065276172_2496" style="background-color: transparent; font-size: 14pt;">of gravity of 5cm (2") (same as ABS). At no stage will G be
above B. (including after dropping the drop weight)</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370 yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2414"><span style="font-size:14pt;" id="yiv7320916847yui_3_13_0_ym1_7_1386061802447_54">In the initial paper work sent before construction, a detailed analyses of stability is to</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416"><span style="font-size:14pt;" id="yiv7320916847yui_3_13_0_ym1_7_1386065276172_24">be </span><span style="font-size:14pt;background-color:transparent;" id="yiv7320916847yui_3_13_0_ym1_1_1386065276172_3315">included. This takes the form of analyzing the heeling levers of 10 different load cases in fresh & salt water, 6 </span><span style="background-color: transparent; font-size: 14pt;">on the surface & 4 submerged & at 6 different heeling</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;">angles. So looks like 120 calculations. </span><span style="background-color: transparent; font-size: 14pt;">Heeling forces from free liquid surfaces, turning circles, wind, ice loads, transference </span><span style="background-color: transparent; font-size: 14pt;">of equipment & personal & payloads from working devices have to be considered.</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;">There needs to be sufficient ballast to keep a minimum of 10% of the pressure</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;">hull out of the water. The draught line has to be marked on the hull. </span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;">When one major ballast tank is damaged the hatch has to be able to open without</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;">water coming in & the heeling angle shouldn't exceed 22,5 degrees.</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;">There is an operational in water test at the end of construction with evaluation</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;">of the center of gravity upon which the pre build calculations were based.</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;">Alan</span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;"><br></span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
yiv7320916847yui_3_13_0_ym1_1_1386065276172_2405 yiv7320916847yui_3_13_0_ym1_1_1386136859721_2416 yui_3_13_0_ym1_1_1386231496534_2369"><span style="background-color: transparent; font-size: 14pt;"><br></span></div><div id="yiv7320916847yui_3_13_0_ym1_1_1386061802447_2502" 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;" class="yiv7320916847yui_3_13_0_ym1_1_1386063901473_2370
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