Starboard has wave boards from the 69 liter Quad to the 171 liter Carve (for really big wave sailors), but the only board longer than 270 cm is the Carve 171.
Why do you want the length?
There are Kodes, Carves, Quads, and Evos that all have wave capabilities, but virtually none but the
Carve 171 is over 270 cm long.
All of these board lines have evolved over the years and the length/width/volume ratios have been
optimized so they really work well in the wavesailing disicpline.
Wave boards are not > than 270 cm anymore.
That would be very old technology!
Hope this helps,