Bulk Carrier Crankcase Explosion - Latent Defect, Common Dry-Docking and One Deductible
An Indian owner insures a 2012-built 45,000 dwt bulk carrier on ITCH 1/10/83 for an agreed value of USD 15,000,000, with a deductible of USD 150,000 any one accident. Her current market value is USD 11,000,000. A fatigue crack in a connecting rod, present since the engine was built, causes a crankcase explosion. The connecting rod and crankcase are destroyed (repair cost USD 260,000); the explosion also wrecks the crankshaft and turbocharger (USD 540,000) and starts an engine-room fire (damage USD 180,000). After the explosion the ship drifts towards a lee shore, the master signs Lloyd's Open Form, and the salvors are awarded USD 1,500,000, of which 60% is apportioned to the ship. She dry-docks for repairs, and the owner also has the bottom scraped and repainted (USD 200,000) while she is there; she had been dry-docked and repainted only eight months earlier. The owner claims loss of hire of USD 1,200,000 for four months; no loss-of-hire cover was purchased.
1. State the amount recoverable under the hull policy, item by item, and explain the treatment of the defective connecting rod.
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The defective part - excluded. The latent-defect exclusion in clause 6 of ITCH 1/10/83 bars loss of or damage to the subject-matter insured caused by latent defect in the machinery or hull. The connecting rod and crankcase are the defective part itself, so the USD 260,000 spent on them is not recoverable. The 1983 wording also removes cover for damage caused by a latent defect where that damage results from want of due diligence by the assured, owners or managers; a manufacturing defect present since build does not engage that proviso.
Consequential damage - covered. The crankshaft and turbocharger (USD 540,000) and the fire damage (USD 180,000) were not caused by the latent defect in the excluded sense; they were caused by the explosion and the fire, both insured perils. USD 720,000 is recoverable, subject to the insurer proving the exclusion applies to any further item.
Bottom treatment - not recoverable. Scraping and repainting is the owner's own work, not damage by an insured peril. The bottom-treatment clause permits such cost only where it is necessary to repair insured damage, or where the bottom has not been treated within the preceding twelve months. Here neither limb is satisfied.
Salvage - recoverable. The ship's 60% share, USD 900,000, is recoverable under clause 11 (General Average and Salvage) without reduction, because the insured value of USD 15,000,000 exceeds the contributory value of USD 11,000,000.
Aggregate. 720,000 + 900,000 = 1,620,000, less one deductible of 150,000 = USD 1,470,000. Loss of hire is not a hull peril and no separate loss-of-hire policy exists, so that head is rejected entirely.
2. How does the under-insurance provision attached to the general average and salvage cover operate on these facts, and what would change if the agreed value were USD 9,000,000?
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Clause 11.1 covers the vessel's proportion of salvage, salvage charges and general average, but reduced in respect of any under-insurance. The test is whether the insured value is less than the contributory value of the ship in the general average - that is, her sound arrived value after the casualty. Where the insured value falls short, the ship's share of the sacrifice and of the salvage is recovered only in the proportion that the insured value bears to the contributory value.
On these facts the insured value is USD 15,000,000 and the sound market value is USD 11,000,000, so the ship is over-insured, not under-insured. There is no reduction and the full USD 900,000 salvage share is payable. Over-insurance in a valued policy is not fatal: section 29(3) of the Marine Insurance Act 1963 makes the agreed value conclusive between the parties in the absence of fraud, and the owner would be entitled to the agreed value even on a total loss.
If the agreed value were USD 9,000,000 the position reverses. The salvage recovery would be reduced to 900,000 × (9 ÷ 11) = USD 736,364. The same proportionate reduction would apply to any general average contribution, and on a total loss the owner would recover only USD 9,000,000 for a ship worth USD 11,000,000 - the classic consequence of under-insuring an appreciated hull. Underwriters should check the rating basis and consider a return of premium or an increased-value endorsement.
3. Would the position differ if the crack had resulted from the owner's failure to follow the maker's overhaul schedule?
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Yes, and substantially so. Two separate defences would then come into play.
The proviso to the latent-defect exclusion. The 1983 wording excludes damage caused by a latent defect where that damage has resulted from want of due diligence by the assured, owners or managers. If the crack is the product of a missed overhaul, the loss is no longer a latent defect arising independently of the owner's conduct. The USD 720,000 of consequential damage - crankshaft, turbocharger and fire damage - would then fall within the exclusion as well, and the whole claim would reduce to the salvage share of USD 900,000, less the deductible.
Unseaworthiness. Under section 39(5) of the Marine Insurance Act 1963 there is no implied warranty of seaworthiness in a time policy, but the insurer is not liable for any loss attributable to unseaworthiness if the assured had privity of it. A documented missed overhaul, known to the technical manager, is good evidence of privity.
What the underwriter must do. These are exclusions and defences; the burden of proof lies on the insurer. The underwriter needs the maker's maintenance manual, the planned-maintenance records, the class survey status and the chief engineer's oil-analysis reports. It should also consider whether a class or management warranty in the policy has been breached, since breach of a promissory warranty discharges liability from the date of breach under section 35 of the Act.