Here are several reasons to not play like a SS:

Too slow - All other ships can go faster than you

Too long reload time - All other ships reload faster than you

Too limited air - You cannot even reach the other side of the map cause you run out of O2

Too weak - a single shot and you are done

Too weak secundary weapon - have a round of 400 to 500 per shot

Poor vision - All the other ships have a better view than you

Lost of moral - If your moral is too low your O2 time is shorted and reload time is longer.

Fight against a bot - You simply cannot attack a bot being alone without be shooted and probably killed

Bots can see you - No matter if you are diving at lvl 2 if the time comes they will hunt you like a dogs

Worst battle balance - Just cause you are a SS the balance of tiers change

Bots shot you anyway - No matter if the bot have the torrets pointing to other way they turn instantly against you

Torps speed too slow - there are some CL or CA that can dodge several times the same torp, never hit them

Torpedoing distance - need to be close to the ship, in order to hit him, other way it can dodge it, melee attack

Torpedo duration - other torpedos stay active longer than yours. (more distance).

Benefits

Stealth - Just againts Humans players, and let other players see the enemys without see them

Powerfull torps - If you are lucky you can sink a BB tier X without armor

Critical - good change of get a critical againts enemys.

If you are a SS player and know some other please add them.

I don't know what can the GM's can do to make a fair play to the SS players.