Who Pays for Bunkers Under a Time Charter?

Under a time charter, the charterer pays for bunkers the vessel consumes during the charter period, while the owner takes back the stem remaining on board at redelivery. The owner still pays for fuel used before delivery and after redelivery, and for any off-hire periods.

For a bunker supplier, that single line decides who signs the confirmation and who settles the invoice. The paying entity is rarely the name painted on the hull, and getting it wrong is how a stem becomes a credit problem. A charterparty is a private contract, so a supplier cannot read it directly. What you can do is identify the commercial party behind the vessel before the stem is agreed.

Who is the paying entity on a time charter?

The charterer is the paying entity for bunkers stemmed and consumed during the charter period. The owner is the paying entity for everything outside it.

• Owner pays: bunkers on board at delivery, bunkers remaining at redelivery, and fuel consumed during off-hire.
• Charterer pays: every stem ordered and consumed while the charter is running, including fuel burnt on charterers' orders.
• Redelivery gap: a vessel stemmed days before redelivery can sit on the owner's account, not the charterer's.

Long-term charters make the point concrete. Asia LNG Transport, the joint venture between NYK and MISC Berhad, has signed a long-term time charter with Malaysia LNG for a newbuild LNG carrier to move cargo to Japan, with Hudong-Zhonghua building the vessel, according to MarineLink. Over a charter of that length the charterer carries the fuel bill for years of port calls, so the stem enquiry arrives from the charterer's operations desk rather than the owner's technical office.

The same structure appears in container and dry bulk markets. Icon Energy, the Nasdaq-listed Greek owner, is taking a minority stake in an entity that owns a 2023-built 1,800 teu eco-design containership employed under a long-term charter, as reported by Splash247. The owner holds the asset; the charterer runs the ship and orders the fuel.

The charterparty check a supplier can actually make

You will not see the charterparty, but the paying entity leaves traces you can check before you quote.

1. Confirm the commercial operator. Ask who is fixing the stem and on whose account. A charterer's operations or bunker desk will answer directly.
2. Check the DOC holder and technical manager. The technical manager runs the ship, but on a time charter the bunker stem is usually the charterer's commercial decision.
3. Match the enquiry to the vessel's schedule. If the vessel is close to redelivery, treat the stem as an owner account until the charterer confirms otherwise.
4. Put the paying entity on the confirmation. Name the party, the vessel, the port and the delivery window, then ask for written acceptance.

This is where chokepoint conditions add pressure. Charterparty wording on routing, war risk and diversion has become a live commercial question, as The Maritime Executive reports. Where the charterparty decides who bears the cost of a longer route, the fuel volume behind that decision grows with it.

Why the BDN quantity matters as much as the party

The bunker delivery note records the quantity and quality actually delivered, and that figure is what the invoice is built on. The charterparty does not set the delivered quantity, so a tolerance between ordered and delivered volume sits in the supply terms, not the charter.

Three practical consequences for suppliers:

• Order and delivered quantity rarely match exactly, so the BDN is the reference point for the commercial discussion.
• On a time charter the charterer disputes the delivered figure, because the charterer pays for it.
• Fuel choice is now a commercial variable in its own right. Biodiesel briefly became the cheapest bunkering option in Rotterdam once European carbon costs were factored in, following the energy market upheaval caused by the war in the Middle East, per Splash247. Charterers weighing that switch are the same people signing the stem confirmation.

Chokepoint disruption keeps feeding back into this. Iran's tactics around the Strait of Hormuz and the stalled talks on reopening it, reported by MarineLink and gCaptain, are exactly the conditions that push charterers into longer voyages and larger stems.

Which role orders the stem

The paying entity is a company. The person who acts on it holds a specific role, and the wrong role wastes the enquiry.

RoleWhat they control CharteringFixes the fixture and the charterparty terms that decide who pays OperationsOrders the stem, sets the port and delivery window Technical or purchasing superintendentSpecifies grade and quality requirements ProcurementHandles supplier terms and the invoice trail

An enquiry sent to the owner's technical office on a vessel that is fully chartered often stalls. The same enquiry sent to the charterer's operations desk before the stem is fixed gets a commercial answer.

How VesselReach helps

VesselReach is built for the window before the stem is agreed.

• Vessel intelligence shows vessels near your selected ports plus scheduled and expected arrivals, which means you can approach the paying entity before the vessel berths.
• AI company targeting identifies the relevant company behind each vessel, so you do not default to the name on the hull.
• Decision-maker discovery finds operations, chartering, procurement and superintendent contacts by role, so the enquiry lands with the person who orders and pays for the stem.

Outreach runs by email, WhatsApp and phone, with automated follow-ups and AI enquiry handling that escalates to a human when it cannot answer reliably. Book a VesselReach demo to see how it works on your ports.