Tools / CPA Calculator
CPA Calculator
Place ships on a nautical grid, set their speed and course, then instantly see closest point of approach and time to CPA for every pair.
All tools
Grid: major = 1 NM, minor = 1 cable (0.1 NM). Drag vector tips to edit speed & course visually.
Vector Length
min
Vector mode
No ships yet. Click “Add” or use the crosshair tool on the grid.