New update: Simulated speed of sound, better map tools, and more!

Speed of sound

• Sound now travels through the world instead of playing instantly. Distant effects now respect the speed of sound, so destroyer deck-gun reports and torpedo impacts reach you after a realistic delay based on their distance. You may see a distant gun flash and get the impact before you hear the shot... speed of sound above water: 343 m/s, below water 1500 m/s.
• This means you may see a distant gun flash or torpedo impact before its sound arrives. Long-range combat should now feel more physical, spacious, and authentic.

Combat and Sound

• Destroyer deck guns now fire at a more historically accurate cadence, with a slightly slower rate of fire and occasional spotting pauses.

Map Plotting

• Hold Shift while drawing or editing a line to lock its angle, allowing you to change only its length.
• Hold Alt while clicking a map annotation to duplicate it.
• Compass circles now have resize handles in all four directions instead of only on the right.

Performance and Stability

• Improved periscope frame rates, particularly while panning with the arrow buttons or keyboard.
• Optimized TDC dial interactions to prevent clicks from causing hitches and frame drops.
• Completed a large internal refactor targeting memory issues that could cause crashes during longer sessions.

Visual Fixes

• Fixed water shimmer effects not turning together with your submarine.

Convoys and Tutorials

• Manually disengaging from a visible convoy now prevents it from immediately auto-engaging again. (Playtest only)
• Clarified why the Position Keeper is inactive at a range of 9999 in the advanced tutorial.