What Type 212 submarines could really do at Jutland

Would modern Type 212 submarines dominate the British battle line if sent to Jutland?

They could be lethal from a prepared ambush, but speed endurance, weapon limits, target suitability, and coordination make the result highly dependent on where they begin.

A submarine's quoted maximum speed says little about the endurance available while sustaining it. A Type 212 can sprint near the pace of a First World War battle line, but doing so consumes its stored energy rapidly and complicates any attempt to remain with a maneuvering surface fleet. Each boat also carries a limited number of weapons, while modern torpedoes and their software are optimized for modern targets rather than armored dreadnoughts. A carefully positioned ambush near Scapa Flow or a known battle route could still be devastating. Once the boats fire, however, destroyers can flood the area with active searches and depth charges, and the German commander faces a difficult communications problem in coordinating submerged boats with the High Seas Fleet. The counterfactual therefore turns on advance position and mission design as much as on the submarines' superior technology.