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All questions
Navigation & chartwork

For the final approach to a harbour, which chart choice gives the strongest starting evidence?

Short answer

A current chart of suitable large scale that shows the entrance detail, units, datums and relevant notes

A harbour decision needs current authoritative information at a scale that contains the required detail. Enlarging a view cannot create omitted source detail, while familiarity and a route line do not prove currency or suitability. Use the chosen chart to plan and monitor position, hazards, depth and alternatives. Revise this in What a Chart Is For.

Sources and scope

Reviewed by Richard Moore on . This answer is scoped to united kingdom and general recreational seamanship; check the current chart, publication, local rules and official operational guidance before acting afloat.

Quick check

For the final approach to a harbour, which chart choice gives the strongest starting evidence?