A vessel is stranded when she is aground and cannot refloat without assistance.
A grounding may be accidental or may be anticipated, e. g. at ports and berths where ships are expected to take the ground whilst alongside (called NAABSA berths and NAABSA ports (see Section F).
In such cases, where the vessel is chartered, a suitable charterparty term such as “not always afloat but safe aground” (often abbreviated to “NAABSA”) should be inserted in the contract.
