Talk:Tutorial: FAQ/@comment-24221050-20140206134957/@comment-62.122.80.38-20140206151150

SS are great for maps farming, but enemy formation, and late maps with yellow DD/CL with heavy ASW gear make them less effective than on early maps. 2-3 is pretty much safe to play with a full sub fleet, if you're lucky you can run it for a couple of hours without having to repair, or just repairing scratch damage every now and then to replenish fatigue. You can run this map, or any early map, with level 10+ fully modernized (改装MAX) subs, level only adds evasion, but un-refitted subs evasion is so low that it caps very slowly and only raises 5-6 points over the levels, just stay alert on boss node, if you get the star formation fleet some of your subs are probably going to get low on health quite easily, since that formation is effective against subs. As for equip, is pretty much confirmed that Turbines are a waste of equipment space on all ships, since if enemy fleets uses an highly effective formation it can hit and crit your ships even with 100+ evasion, so equip Oxygen Torpedoes and make their opening attack more effective, if you run a map with 4+ subs, having enough torpedo stats means 2~4 enemy ships sunk with opening attack, much better than relying on luck with evasion stat. That being said, you can run most maps with a full fleet of subs, for example i cleared 3-4 with B rank since my full BB/CV fleet was being redirected constantly to side nodes, just remember that yellow DD/CL have high ASW gear (Sonar + Recon Plane + Mines) and they can hit hard even in Line Ahead.

tl;dr: stop being a faggot and run subs with torpedoes, turbines are useless crap that doesn't effectively help you, offence is your best defense.