I was looking for information about the Canadian JSS and found some 2006 and earlyer designs/study's.
This is the last one made in 2006
some main info:
Length: 185 m
Beam: 26 m
Draft @ DWL: 8,5 m
Displacement @ DWL: 26,500 t
Propulsion type: IFEP
Props: 2x FFP
Power: 32.00 MW
Speed: 20 kts
Accomm: 320 pers.
TEU capacity: 20
Vehicles: 1050 lane meters
Flight deck spots: 1
Aircrafts: 3*
* I realy doubt that because of the very big size of the CH-148.