To be honest i realy love this design from DSNS.
from 1:25 till 6:30 is an interview with DSNS about the ship.
http://www.youtube.com/watch?feature=pl ... vXdBat2cPM
Just took this off the YouTube clip:
The 6 Basic versions already pre-designed by Damen are:
XO115S XO123SF XO131C XO139CF XO131A XO131T
l.o.a. 115m 123m 131m 139m 131m 131 m
displ 4500 t 5000t 5300 t 5600t 5500t 5500t
Max speed: 21 kn 24 kn 28 kn 30 kn 26 kn 22 kn
My guess would be:
XO115S= Standard design
XO123SF= Special Forces or Standard Frigate
XO131C = Command design or Combat
XO139CF = Combat Frigate or Command Frigate
XO131A = Amfibious Raiding
XO131T = Transport design or Training
They all would fit your competition so i think its more a never-build now