Take a new boat......NOT!!

[Schroeder]

Well, the Porpoise goes 7 knots faster than the the S-Class on the surface and when you recharge your batteries you will still go on two propellers. Two extra torpedo tubes and four extra torpedoes are a nice addition as well. And last but not least it can go deeper.

But, well, sometimes statistics aren't just enough to convince someone to take a new boat. I'm sticking with my Porpoise now even though I've been given opportunity to upgrade to another model twice. I just like the boat.
I liked the S-Class a lot too, but it was simply too slow on the surface.

[Fincuan]

The Porpoise is a nice boat for sure, but recently I almost cried when engaging a huge Nip Task Force with a Porpoise, and thinking what could be accomplished with the four more tubes and at least six more torpedoes of a proper Fleet Boat

[Arclight]

I quess it just depends on personal preference and area of operation. A S-boat is well suited to sailing from the bases in the Philipines and Australia; lots of shallow waters and a lot of landmasses around (read lots of airbases and dense aircover), so the boat doesn't need to be able to dive too deep and high submerged speed can be very beneficial. Range also doesn't need to be a problem, since you don't need to cover an entire ocean like when sailing from Hawaii / Midway. And 2 extra tubes, well... I tend not to use them that often anyway. I fire the first four tubes and only use the extra 2 if I need to finish something of, saves me from have to bring the boat about. The increased surface speed however is always a big bonus.

To each his own.

*just got offered a new command. Any benefits from trading in a Gar for a Gato class?