Valuing Shore-Side Damage After An Allision: Key Principles For Owners, Charterers, And Underwriters

Recent court decisions provide a framework for calculating fair compensation for dock, dolphin, and other structure damage caused by vessel strikes.

Apr. 2, 2026 at 6:22am

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When a vessel strikes a dock, dolphin, or other structure, determining the appropriate compensation can be complex, with considerations around whether the damage is a total or partial loss, the pre-allision condition of the property, and the extent of loss of use and mitigation costs. This article outlines the key legal principles and practical steps for owners, charterers, and insurers to navigate these maritime property damage claims.

Why it matters

Allision incidents involving vessels and shore-side structures are common, and the resulting property damage claims can be high-stakes for all parties involved. Understanding the legal framework for valuing these damages is crucial for owners seeking fair compensation, charterers managing liability exposure, and insurers evaluating coverage and reserves.

The details

Several issues are essential considerations in valuing allision damages, including: (1) whether a structure is a total or partial loss; (2) the pre-allision condition of the property compared to the post-repair condition; and (3) the extent of loss of use and mitigation costs. For partial losses, damages are the difference in market value before and after the incident, typically measured by the reasonable cost of repair. For total losses, the measure of damages is generally capped at the market value of the structure immediately before the incident. Courts will consider a range of evidence to determine market value, especially for unique or specialized facilities. The "new for old" rule prevents owners from receiving a financial windfall by replacing old, depreciated property with new at the wrongdoer's expense, so courts will reduce recoverable damages for "betterment" - any increase in value or extension of useful life resulting from the repairs. Loss of use damages may be recoverable for partial losses if proven with reasonable certainty, but owners have a duty to mitigate damages through reasonable efforts.

  • The article does not provide any specific dates or timelines related to the allision incident.

The players

Property Owners

The owners of the dock, dolphin, or other shore-side structure that was damaged in the allision incident.

Vessel Operators

The owners, charterers, or other parties responsible for the vessel that struck the shore-side structure.

Insurers

The insurance companies that provide coverage for the property owners and/or vessel operators involved in the allision incident.

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The takeaway

This article highlights the complex legal and technical considerations involved in valuing shore-side damage claims following an allision incident. By understanding the key principles around total vs. partial loss, depreciation, betterment, and mitigation, property owners, vessel operators, and their insurers can better navigate these high-stakes disputes and work towards fair and reasonable compensation.