Traverse Sailing

MARITIME – DEAD RECKONING & COATAL NAVIGATION CALCULATOR Traverse Sailing A precise tool.
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What is the Traverse Sailing & How does it work?
Traverse sailing is a dead‑reckoning technique used to determine the overall course and distance when a vessel sails two successive legs with known courses and distances. By resolving each leg into north‑south (Y) and east‑west (X) components, the navigator can sum the vectors to obtain a resultant vector that represents the combined effect of the two legs. The resultant course is measured clockwise from true north, and the resultant distance is the magnitude of the summed vector.
R = sqrt{(D_{1}sin C_{1} + D_{2}sin C_{2})^{2} + (D_{1}cos C_{1} + D_{2}cos C_{2})^{2}}
theta = arctanleft(frac{D_{1}sin C_{1} + D_{2}sin C_{2}}{D_{1}cos C_{1} + D_{2}cos C_{2}}right)
R = resultant distance (NM), theta = resultant course (°)
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Parameters
Result —
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Frequently Asked Questions
What is traverse sailing?
Traverse sailing is a dead-reckoning method used to determine the total course and distance when a vessel travels two legs with known courses and distances.
How do I resolve each leg into north-south and east-west components?
To resolve each leg, use trigonometry: calculate the Y (north-south) component as distance times cosine of the course angle, and the X (east-west) component as distance times sine of the course angle.
What is a resultant vector in traverse sailing?
A resultant vector represents the combined effect of all legs when their north-south and east-west components are summed.
How do I measure the resultant course?
Measure the resultant course clockwise from true north using the arctangent function on the summed X and Y components.
What is the formula for calculating the resultant distance?
The resultant distance is calculated as the square root of the sum of the squares of the total north-south (Y) and east-west (X) components.

Results are for informational purposes only and do not constitute professional advice.