If if the 115 was 108 litres i would be suprised. While its not impossible I say this as the 104 floats me in fresh water and I am 90 kilos naked.
if you dont buy the 115, drop me a line ( is it in north america??) The S-Type were nice boards, while not an all out slalom, and not absolutley early planing, they are loose and fast , kinda like the kode.
jeff e of the gwn