A High North and amphibious role for the Canadian Navy

What NATO niche and ship types would make sense for the Royal Canadian Navy?

Frigates focused on the High North, complemented by a modest landing helicopter dock or ski-ramp aviation ship rather than a large carrier.

A useful Royal Canadian Navy niche in NATO begins with frigates and security in the High North. A small aviation and amphibious ship could complement that force. A landing helicopter dock with a ski ramp, comparable in concept to ships being built by Italy, could support helicopters and short-takeoff aircraft while remaining proportionate to Canadian needs. Such a ship would add expeditionary and aviation options without pretending Canada required a US-style carrier force. The answer links force design to geography and alliance contribution rather than choosing ships for prestige alone.