Maritime Expert Witnesses in Charterparty War Risk Disputes

It is important to keep two things apart. The interpretation of the clause — what it requires, what standard it sets, how it applies to the facts — is a matter of law for counsel and the tribunal. The factual threat environment — what the danger to this vessel actually was, how it was reported, how it was developing — is a matter of operational and intelligence expertise.

An expert who strays into legal conclusions weakens the evidence and invites challenge. Trident's opinion stays on the operational side of that line: exposure, targeting risk, and the reasonableness of the decisions taken in the conditions prevailing at the time. It does not tell the tribunal how to construe the contract.

The reasonableness of a master's or owner's decision is judged on what was reasonably available when the decision was made. Rebuilding that contemporaneous picture is central to the opinion: the warnings and advisories then current, official maritime guidance, threat reporting for the area and period, and the operational record for the vessel and voyage.

This is deliberate work to exclude hindsight. The point is not what is now known about the transit, but what a competent operator could reasonably have known and concluded at the relevant date — the discipline set out in how a maritime security expert assesses whether a voyage was dangerous.

Voyage orders, routeing decisions and port calls are assessed against the exposure of the specific vessel, not the region in the abstract. Two vessels ordered on similar voyages can face materially different risk depending on flag, ownership and management, recent port-call history and any apparent affiliation — the same considerations that drive vessel affiliation checks.

A defensible opinion therefore reasons from the particular: how this vessel was likely to be perceived by the relevant threat actor, whether it matched a discernible targeting pattern, and how its direction and profile affected exposure on the ordered voyage. Whether that exposure crossed the contractual threshold of real danger is then for the tribunal.

Expert evidence is only worth what its independence makes it worth. The expert's duty is to the tribunal or court, and the opinion is offered without advocacy — it should read the same whichever party instructs it, and it should hold under cross-examination.

That independence is also what makes the evidence useful across the range of war-risk questions a charterparty can raise, from unsafe-port arguments to force majeure and deviation: see safe port, war risk and force majeure.