A 2,017-ton German submarine emerged off the northern tip of Scotland during a recent military exercise, giving British commandos a launch point to reach shore by inflatable boat, scale cliffs, and direct the guns of a 401-foot Portuguese frigate at targets inland. The drill showed how allied forces plan and execute covert landings from submarines in challenging coastal zones.

The exercise brought together several NATO partners, combining submarine operations with shore-based strike coordination in a high-pressure drill setting. Scenarios like this are increasingly common as NATO focuses on combined arms coastal tactics.

Separately, the Australian Naval Institute highlighted problems about fragile supply chains underpinning nuclear submarine programs, a warning that brings added scrutiny to long-term procurement planning for Australia's future submarine fleet. Analysts say supply chain resilience will be critical as Australia works toward standing up its submarine capability.