Hanly's Maneuvering Board Avoidance Calculator

Point Time (HHMM) Bearing (°T) Range (yds)
M1
M2
Your Ship Speed (ER) Course (ER)°T
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Direction to Turn Open CPA to (yds) Speed Constraint (knots)
Old MRM (yds): Old SRM (knots):
Old DRM: True Speed (knots):
True Course: Old CPA Range (yds):
Old CPA Bearing: Old CPA Time:
New CPA Bearing: New CPA Time:
Old Target Angle: Old Bearing Drift:
New Course: New Speed (knots):