Hi,

there are players who wished to have possibility to develop more in SS line and others
who are afraid of correct balancing.

We do not need the subs with more air, more tubes etc. But I think many would
appreciate if they could carry more weighted (high lvl) sailors and (of course) a new
shiny graphic of the new subs. So the suggestion:

1. add T5 and T6 subs with basic characteristic very close to current SS4
2. with new look
3. and ability to take more payload (for more weighted crew).