Where international maritime law sets the framework, maritime commercial law is where a chartering desk actually lives day to day: the contract that gets negotiated, the documents that move the cargo, and the claims that follow when something does not go to plan. This chapter works through the practical contract and cargo-claim mechanics; the international convention background sits in the previous chapter.

Nothing in this chapter is legal advice — it is a practical orientation for a commercial desk, and any live dispute should go to qualified maritime lawyers.

The Charter Party as a Contract

A charter party is, legally, an ordinary commercial contract — freedom of contract applies, and the parties are generally free to agree whatever terms they choose, subject to any mandatory conventions incorporated by law or by a paramount clause. In practice, almost every fixture starts from a standard form and is heavily amended by rider clauses, which is why the chapter on charter party forms elsewhere in this handbook treats the printed form as a starting skeleton rather than the actual deal.

Formation: When Is a Fixture Actually Binding?

English law — the default governing law for most dry bulk charter parties — does not require a signed document for a binding contract to exist; an exchange of offer and acceptance on essential terms is enough. This is precisely why a clean recap with subjects lifted is treated as binding well before the full charter party document is ever signed. Where the parties fall out over whether a fixture was actually concluded, courts and arbitrators look at the substance of the exchange, not just its form.

The Bill of Lading’s Dual Role

A Bill of Lading plays two distinct legal roles that are easy to conflate: as between charterer and owner, it is usually just a receipt, with the charter party governing their relationship; as between the carrier and a third-party holder of the bill — a bank, a buyer under a letter of credit, a receiver — it can itself become the contract of carriage. This is why B/L wording matters even on a voyage where the charterer and the eventual cargo receiver are different commercial parties entirely.

Cargo Claims: Who Can Sue, and For What

A cargo claim generally requires the claimant to hold title to sue — typically by being the lawful holder of the Bill of Lading — and to show the cargo was damaged or short while in the carrier’s care, after which the burden generally shifts to the carrier to show the loss falls within a recognised exception (such as an “act of God” or “inherent vice” of the cargo itself) or that due diligence was exercised. In dry bulk, the most common live disputes concern cargo condition and moisture, contamination from inadequate segregation, and shortage disputes tied to draft survey figures.

Time Bars: The Clause That Kills a Good Claim

Most cargo claim regimes and most demurrage clauses carry strict time limits — commonly one year under the Hague-Visby Rules for cargo claims, and anywhere from 30 to 90 days under a charter party’s own demurrage time-bar clause. These limits are usually applied strictly regardless of how meritorious the underlying claim is, which is why a claims desk treats the time-bar date as a harder deadline than almost anything else in the file.

Frustration and Force Majeure

English law distinguishes between force majeure — a contractual clause allocating risk for specific listed events — and the common law doctrine of frustration, which discharges a contract entirely where a supervening event makes performance radically different from what was agreed, without either party’s fault. Frustration is applied narrowly by English courts; a charter party simply becoming unprofitable, or a voyage becoming more expensive than expected, does not frustrate it. A genuine change of law making the voyage illegal, or a total, indefinite closure of the only viable route, is the kind of event that might.

Why This Belongs on the Commercial Desk, Not Just Legal

None of this is a substitute for qualified legal advice on an actual dispute — but a broker who understands why a recap is already binding, why a time bar is unforgiving, and why B/L wording matters even when the charterer and receiver are different parties, negotiates and drafts noticeably more carefully than one who treats these as someone else’s problem to solve later.

The Charterparty as a Commercial Contract

A charterparty is, at its core, an ordinary commercial contract dressed in centuries of specialist shipping language. Standard forms such as Gencon for voyage charters or NYPE for time charters give both sides a familiar starting point, but every fixture still involves negotiating laytime, demurrage, cancelling dates, off-hire and a long list of rider clauses that shift risk between owner and charterer. Reading a charterparty as a risk-allocation document, rather than just a rate and a route, is what separates a competent broker from an order-taker.

Because these forms have been used and litigated for decades, individual clauses carry settled meanings that courts and arbitrators will apply even if the parties did not turn their minds to the exact consequence at the time of fixing. That is precisely why deviating from a standard clause, even in a small way, deserves careful legal thought rather than being treated as routine drafting.

Bills of Lading and Title to Goods

The bill of lading performs three separate legal functions at once: it is a receipt for the cargo actually loaded, evidence of the contract of carriage, and a document of title that allows the goods to be bought, sold and financed while still at sea. A trader can sell a cargo of iron ore three times over during a single voyage simply by endorsing and transferring the bill of lading, without the ship ever needing to know who currently owns what is in her holds.

This is powerful, but it also means errors on a bill of lading (wrong quantity, wrong condition remarks, wrong date) ripple through every subsequent sale and every letter of credit drawn against that cargo. Masters and owners take bill of lading accuracy extremely seriously for exactly this reason, and disputes over clausing a bill for damaged or short cargo are among the most common flashpoints between owners and charterers.

Cargo Claims: Liability, Defences and Time Bars

When cargo arrives short, damaged or contaminated, liability is governed primarily by the Hague-Visby Rules (or their national equivalents), which set out a carrier’s obligations, a list of statutory defences such as perils of the sea or inherent vice, and financial limits on how much a carrier can be made to pay per package or per kilogram. Crucially, the Rules also impose a strict one-year time bar for bringing a cargo claim, which makes prompt notice of loss and early evidence-gathering essential rather than optional.

For a broker or operator, the practical lesson is that cargo claims are won or lost in the first days after discharge, not months later when lawyers get involved: preserving survey reports, photographs, tally sheets and correspondence immediately after a claim surfaces is what gives an owner or charterer a real defence later.