Not PC-IMAT

Tap the map to choose a water point You’ll confirm the point before the profile loads.

—

The water column

Build the sound-speed profile

Select a map point to reveal an illustrative environmental and sound-speed profile.

Profile period

Fixed calendar quarters—not hemisphere-specific season names.

Ship source depth 50 m

Vertical fan center 0°

Fan half-width ±2°

Positive angles launch downward. The fan samples launch angles uniformly; it is not a modeled transducer beam pattern.

Display units

Select an ocean point to load public climatology. One representative vertical profile is repeated horizontally; paths and bottom response remain illustrative, not an operational prediction.

Environmental profiles

Sound-speed profile

Read the sound-speed profile

Built to make one difficult idea visible.