Wow.... that's a nice pictures Meteorafallen.... is there any pic for Galaxy class there?
If I remmember correctly ACTD said that 3 torpedo tubes. One on the aft of the sail section. Two on fore, one near the deflector, one on the sail. Each tubes capable to shoot up to 5 shoot, means there are 5 x3 = 15 shoot.
well... that's match the picture....