MASS Time-to-Collision
Time-to-collision between own ship and target based on relative-position vector. Used inside autonomous collision-avoidance algorithms.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Current range | nm | |
| Rate of approach | kn | |
| Time to collision | min |
Source: COLREGS Rules 7–8
In short
Time-to-collision between own ship and target based on relative-position vector.