I guess SH3 devs just never bothered with unloaded draft as the ships we sink are supposed to be loaded. Thanks for the link,its nice to see an actual manual.
As to my original post I am going "the way of Fifi"! NYGM Enhanced with map contacts on is superb.My foray into all boxes checked and set sail did not end well even though I managed a ship or two.This just feels more real to me,especially the dotted lines for sonar contacts.
On the surface I think it could be slightly improved by having ship spotted leave a box where ship was seen but it doesnt track the ship and the box fades after awhile.To get a new location for the ship you must get on a scope,lock target and press identify to get a new box so you can mark on map.Would add a bit of involvement for player as he must get on scope and then mark and find ships course over time.
Maybe maybe not?