TL;DR: Under a time charter you hire the ship for a period, direct where it goes, and pay hire plus fuel and port costs. Under a voyage charter you buy one voyage: the owner runs the ship and pays the costs, and you pay freight per tonne plus demurrage if you hold the ship up. Under a bareboat charter you take the whole ship and run it yourself, crew and all. The rule of thumb: control follows cost. Whoever directs how the ship trades ends up paying for the fuel it burns and, increasingly, the carbon it emits.
The three charter types in one minute
Every charter answers the same two questions: who controls the ship, and who pays which costs. Time charter: charterer controls commercially, owner runs the ship. Voyage charter: owner controls and pays, charterer buys the outcome. Bareboat: charterer takes everything but the steel. Each answer moves fuel, port, crew and carbon costs from one column to the other.
Time charter: you direct the ship
The charterer hires the vessel for a period, from a single trip (a trip time charter) to several years, paying hire per day. The owner provides crew, maintenance and insurance; the charterer decides employment: cargoes, routes, speed, and pays for bunkers and port costs. Because the charterer controls how the ship trades, performance matters intensely: the CP's speed and consumption warranties become the benchmark every voyage is measured against.
Voyage charter: you buy the voyage
The owner performs a defined voyage, cargo, load and discharge ports, laycan, and pays for fuel and ports, recovering costs through freight (per tonne or lump sum). The charterer's main obligations are to provide the cargo and to load and discharge within the agreed laytime, paying demurrage when they exceed it. Port delay risk sits with the charterer; weather and performance risk at sea sit with the owner.
Bareboat charter: you run the ship
In shipping (as opposed to the leisure market the term also serves), a bareboat or demise charter hands the charterer full possession: they crew, maintain, insure and operate the vessel, often for years, sometimes as a financing structure with a purchase option. The owner's role reduces to that of a financier of steel.
Who pays for what, including carbon
The cost split is the practical heart of the choice, and carbon has joined the table: under time charters, standard clauses (such as BIMCO's ETS clauses) increasingly pass EU ETS allowance costs to the charterer, mirroring the fuel logic; under voyage charters owners price carbon into freight. The full mechanics are in who pays for EU ETS.
Which charter type fits your strategy
Buy voyage charters when you have occasional cargoes and want cost certainty per shipment. Take time charters when you trade continuously and want to capture the upside of running ships well: your speed, routing and bunker decisions become your margin. Bareboat suits owners-in-all-but-name. And note the asymmetry: under a time charter, vessel choice is everything, because you inherit the ship's real consumption for the whole period. A ship that burns more than described costs you that error every day of the charter, which is why comparing candidate vessels on modelled real performance before fixing has become standard practice for serious operators, and why CP speed and consumption compliance is monitored voyage by voyage after.
The bottom line
Control follows cost: the party who directs the ship pays for how it sails, in fuel and now in carbon. Pick the charter type that matches how continuously you trade, and pick the ship on data, because under a time charter you marry its consumption curve. The terms themselves live in the charter party. Book a demo to see vessel comparison on real performance.
