Hello,
Pablo wrote
" ... A 250-lb. depth charge with improved explosives (HBX-2) was placed 30 feet away while the sub was surfaced. The pressure hull was cracked open, and the sub sank in about 20 seconds. ..."

From which date did they use those charges ? 30 feet or roughly 10 metres distance are certainly close ... Since the depth charge "size" does not seem to change over the years in SH3, how should this be modelled ? Maybe a later version of the SH3 commander could adapt to this at a later time, copying other depth charge files to the appropriate folder at certain dates (?).
Greetings,
Catfish