In DevelopmentThis is an early, playable build — expect bugs, missing features, and placeholder art.
Early Development Build
Royal Navy Escort Command · North Atlantic, 1942

Eight Hours
to Daylight

Take the helm of a Royal Navy escort destroyer. Track U-boats by ASDIC and radar, plot the intercept, and put a depth-charge pattern where it counts — before the wolfpack finds the convoy first.

Begin Patrol Free browser demo — no install. Desktop, Chrome or Firefox recommended.
Eight Hours to Daylight gameplay: ASDIC and Type 271 radar scopes, weapons panel, and communications log during a night contact engagement
In-game — sonar/radar station, contact engagement

Your Station

  • Sonar / Radar Active ASDIC and Type 271 radar. Track submerged contacts by bearing and range; paint surfaced U-boats on the PPI scope.
  • Plotting Table Build the tactical picture. Mark contacts on a scaled chart and lay off intercept courses over time.
  • Bridge & Guns 4″ QF Mk V deck gun. Panoramic bridge view with ballistics-accurate fire on surfaced contacts.
  • Depth Charges Run down the contact and drop the pattern. Get the geometry wrong and the U-boat slips away.
  • Comms / HF-DF Intercept U-boat radio traffic for rough directional fixes on the wolfpack.

The convoy is counting on you.

Runs in the browser via WebGL — jump straight to the sonar shack.

Begin Patrol