A Navicert is a clearance certificate that confirms that a merchant ship, neutral in a conflict, and its cargo have been searched by a warring party. Ships that were searched and found harmless in the Navicert were given permission to continue their voyage to a neutral port with this document .
The system was first introduced by the British during the First World War.
- Jacob Bes: Chartering and Shipping Terms. Manual for tramp and liner shipping . German edition, 2nd edition. Uitgeverij C. De Boer Jr. et al., Hilversum et al. 1968 (Consistent with the 6th English edition).