let's build a ship

[whswhs]

Originally Posted by mlangsdorf

64" of freeboard on a 44" draft seems pretty reasonable. A man of normal height, standing in a rowboat next to Dola's Fortune, can grab the top of the deck and pull himself up, but it's definitely a climb.

21" of freeboard seems dangerous low for a sea-going ship. It feels more appropriate for a recreational canoe on a placid lake than anything you'd want to take out where there are serious waves. 3 Beaufort has 2'+ waves, so you'd be pumping the bilge in weather but the mildest. The higher freeboard version doesn't run into problems until 5 Beaufort, which is edging towards severe weather.

Looking at this further, I notice that the actually usable volume of Dola's Fortune is 4096 cubic feet, of which 1245 cubic feet goes for accommodations. That leaves 2851 cubic feet. If I assume that 90% of that is full of miscellaneous cargo, that gives 51,000 pounds. That gives draft of 41 inches and freeboard of either 67 or 24 inches.

Earlier I obtained a draft of 30 inches for the empty ship, which gives freeboard of either 78 or 35 inches.

It does look as if I still need to use Submarine lines to get the full height, at least if the ship is going to be viable on blue water.