Overseas Tankship (UK) Ltd v Morts Dock & Engineering Co Ltd (The Wagon Mound No 1) [1961] AC 388
The Wagon Mound No 1 established reasonable foreseeability of the kind of damage as the principal remoteness test in negligence. It rejected liability for every direct consequence of a negligent act.
Facts
The crew of the Wagon Mound negligently discharged furnace oil into Sydney Harbour. The oil drifted to Morts Dock, where workers were repairing ships using welding equipment. The dock managers asked about the danger of fire and were advised that furnace oil floating on water would not ignite. Work continued, with precautions intended to stop hot metal falling into the oil. Several days later molten metal ignited debris floating on the water, the oil caught fire and the blaze severely damaged the wharf and vessels. Fouling of the slipways by oil was foreseeable, but the trial findings treated fire damage as unforeseeable. Morts Dock recovered below because the fire was said to be a direct consequence of the discharge under the rule then associated with Re Polemis.
Legal Issue
Was the shipowner liable for fire damage that directly followed its negligence but was not a reasonably foreseeable kind of harm?
Held
The Privy Council held that the shipowner was not liable for the fire damage. Viscount Simonds rejected the Re Polemis approach, under which a defendant responsible for some foreseeable damage could be liable for all direct consequences however unforeseeable. Negligence is founded on reasonable foresight, and the same idea should limit the kinds of damage for which compensation is payable. The relevant question was whether a reasonable person in the defendant's position would have foreseen damage of the general kind that occurred. On the factual findings before the Board, ignition of the furnace oil and resulting fire were not reasonably foreseeable. Foreseeable contamination did not make the defendant liable for the different, unforeseeable kind of fire damage.
⭐ Legal Principle
A negligent defendant is liable only for damage of a kind that was reasonably foreseeable at the time of the breach. It is unnecessary to foresee the precise sequence of events or full extent of injury, but foreseeability of one type of damage does not establish liability for a fundamentally different type.
Significance
The decision replaced the broad direct-consequence rule in Re Polemis with the modern foreseeability approach to remoteness. Hughes v Lord Advocate shows that the precise manner in which a foreseeable type of injury occurs need not be predicted, while the thin-skull rule permits recovery for an unforeseeable extent of a foreseeable injury. The Wagon Mound No 2, arising from the same spill but different evidence and claimants, held that even a small fire risk could be foreseeable and relevant to breach where precautions were easy. Students should keep breach and remoteness distinct.
Common exam questions about this case
Why was foreseeable oil pollution insufficient to establish liability for the fire?
Remoteness is assessed by the kind of damage, not merely by whether some loss was foreseeable. The findings treated fouling damage as foreseeable but fire damage as a different and unforeseeable kind. The defendant's responsibility for the spill therefore did not extend to the fire simply because the fire followed directly from the oil's presence.
Must the defendant foresee the exact way in which the claimant is injured?
No. The defendant must reasonably foresee the general kind of damage. Later cases such as Hughes v Lord Advocate confirm that an unusual mechanism does not make the loss too remote where the injury falls within the foreseeable type. Conversely, foresight of one kind of loss does not cover a materially different kind merely because the causal sequence is direct.
Why did The Wagon Mound No 2 reach a different conclusion about fire risk?
The later proceedings involved different claimants and evidence. The Privy Council concluded there that a reasonable person would have recognised a real, although small, risk of ignition and taken inexpensive precautions. No 2 therefore concerned whether the fire risk was foreseeable for breach, whereas No 1 proceeded on a finding that fire damage was not foreseeable and addressed remoteness.