Block depth = leg average (seafloor, MSL + tide), time = dist ÷ speed
rounded up. Levels = merged depth/time pairs for a deco calculator. Estimates —
verify before diving.
Editing: drag a site to move it ·
click a site to rename or delete · click the map to add one ·
Export copies the list as JSON. Orange = position needs verification.
Bathymetry: CSUMB SFML 1 m (Whalers/Bluefish, 2000–2013) +
NOAA CUDEM 1/9″ topobathy (outer areas), depths in ft below MSL.
Headings magnetic (grid +0.63° conv., −declination). Not for navigation without verification.