I wouldn't imagine that a strategic sealift ship would be used as part of an amphibious assault (that is the role of LHD/LSD/LPD/LST). So needing specialised facilities especially to unload at the SPOD would limit the number of locations that could be used. At a long stretch a safe anchorage and mexeflotes could be used to transfer the cargo from the strategic sealift to the tactical sealift (or shore). This option would make the anchorage a high value target so it would need SHORAD and MR-GBAD for air protection and perhaps the OPVs for limited maritime protection.They look all right, but they require special facilities to load / unload vehicles, because of the stern ramp. 3,000 lane metres and 700 20ft teu is nothing to laugh at though, so it's not insurmountable and the price isn't too be sneezed at. If they can cross the Bass Strait they can handle most seas.