DIVE PROBLEM... test your physics!

[Scubakevdm]

Of course, we did not include the weight of the lift bag and lines in this equation. We also did not produce any positive lift but just got the anchor neutral. But we have a great starting point from which to select tanks and gas volume from the cylinders we have to choose from in this example.

Your figures are good, nice job. There is one factor that has been neglected. While the weight of the line or lift bag is probably of little consequence, the length of the rigging is, as it changes the depth of the bag.

 

[twatto]

Hmmmm.....first let's convert it to useful measurements:

5000 lbs is 2268kg
10 ft3 is 283 litres
68 ft is 20.73 metres or 3.06 ata

R..

Useful measurements.... I agree....!!

Once the anchor is up, what about the boat connected to it?