/09 · Transport

Autonomous Marine Tankers

Roughly nine-tenths of traded goods move by sea, on ships whose bridges are being rebuilt in software and whose fuel is being changed at the same time. Two structural transitions, one hull.

Fig. — Autonomous Marine Tankers Pignus

Crewless bridge · COLREG-compliant autonomy

/01

The frontier

What is actually happening at the edge.

/01

The bridge becomes software

Situational awareness on a modern autonomy stack is a fusion problem: AIS and ARPA radar, solid-state and pulse-compression sets, electro-optical and long-wave infrared cameras, and increasingly maritime lidar, resolved into a single track picture that must survive fog, sea clutter, glare and the routine unreliability of AIS. The hard part is not seeing the target but the decision layer above it — collision avoidance that satisfies the COLREGs, a rule set written in 1972 for human judgement and full of terms like "good seamanship" and "ample time" that resist formal specification. Serious work is now in demonstrating that a system's manoeuvres are legible to a human master on the other vessel, because a technically safe but unreadable alteration of course is itself a hazard. Sea trials of ocean-going hulls under machine control, with crew aboard as monitors, are the current state of play.

/02

The centre moves ashore

Autonomy does not remove the operator; it relocates them to a remote operations centre where one watchkeeper supervises several hulls, taking control by exception. That inverts the engineering problem into communications and human factors: latency budgets over VSAT and now low-earth-orbit constellations, graceful degradation when the link drops mid-manoeuvre, and the well-documented failure mode in which a supervisor asked to resume control of a system they have not been actively flying makes a worse decision than either party alone. Cyber exposure changes character too — a compromised remote centre is a fleet-level event, not a single-ship one, which is why hardened networks and IMO cyber-risk requirements in safety management systems have moved from afterthought to design constraint.

/03

The fuel changes underneath

Decarbonisation and autonomy are converging on the same newbuild. LNG is the incumbent transitional fuel and carries a methane-slip penalty; methanol is liquid at ambient conditions and therefore cheap to bunker, at roughly half the volumetric energy density of fuel oil; ammonia is carbon-free at the stack but toxic, corrosive and slow to burn, requiring pilot fuel, and it is precisely a toxic-cargo, toxic-fuel vessel that makes an unmanned engine room attractive rather than merely economical. Two-stroke engines for both methanol and ammonia have moved from test bed to order book. Fuel availability, not engine technology, is the binding constraint, and it is a port-infrastructure question.

/04

Rules, class and the underwriters

MASS — maritime autonomous surface ships — is being brought inside the regulatory perimeter. The IMO's non-mandatory MASS Code is the near-term instrument, with a mandatory regime intended to follow, and in the meantime the working mechanism is the flag-state trial authorisation supported by class-society notations from the major societies, each of which has published rules for autonomous and remotely operated functions. Underwriters are the real gate: P&I cover and hull-and-machinery pricing depend on assigning liability when no one is aboard, and on definitions of seaworthiness and safe manning drawn from SOLAS and STCW that presume a crew. Ports are the third leg — automated mooring, shore power, and berth scheduling determine whether a crewless voyage ends in a crewless call or a manned one.

/02

Our position

How the families stand in this field.

Six generations in railways and fuel produce a particular reading of this sector: the vessel is the visible asset, but the return sits in the corridor — the berths, the bunkering, the terminal slots and the fuel that fills the tank. Positions are taken along that corridor rather than in any single hull, and are held across the twenty-year life of the steel rather than across a fund cycle.

Two transitions arriving on the same newbuild is a rare condition, and it favours capital that can wait. Crewless systems will be certified vessel class by vessel class and flag by flag; alternative-fuel bunkering will arrive port by port. Exposure is therefore structured to be indifferent to which fuel and which autonomy architecture prevails, and concentrated instead in the assets that every outcome must pass through.

The jurisdictions in which the families are established — Poland, Morocco, Malta, the United States, Egypt — sit on the North Sea–Baltic, western Mediterranean, Suez and Gulf routings, and include one of the world's principal ship registries. That is a matter of where the families have lived and worked for six generations, not of recent positioning.

/03

Other briefs

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