Florida Yacht Owner Sued by Marine Insurers Seeking Policy Rescission After Sunseeker Partial Sinking at Miami Marina
A consortium of marine insurance underwriters has filed a federal declaratory relief action in the Southern District of Florida against Florida yacht owning entity Rock Moon Marine LLC and its loss payee, ETI Financial Corp, now known as Honor Capital Corp. The lawsuit, filed under Case Number 1:26-cv-27008-PCH, seeks a judicial decree establishing that the underwriters owe no insurance coverage and that the hull policy is void from its inception following the partial sinking of a seventy-five foot motor yacht at Waterways Marina in Miami.
Underwriters Seek Declaratory Judgment in Southern District of Florida Over Yacht Sinking Claim
The plaintiff insurers, including Accelerant Specialty Insurance Company, Hadron Specialty Insurance Company, Spinnaker Specialty Insurance Company, Texas Insurance Company, Palomar Excess and Surplus Insurance Company, and Certain Underwriters at Lloyds of London, initiated the maritime contract lawsuit invoking federal admiralty jurisdiction. According to court filings, the dispute centers on a 2008 Sunseeker motor yacht named Rock Moon, powered by twin fifteen hundred horsepower MAN diesel engines. On July 18, 2026, the vessel suffered an alleged partial sinking while moored afloat in its marina slip, leading to reported water ingress and severe property damage throughout the engine room spaces and lower guest cabins. Rock Moon Marine subsequently submitted a formal casualty claim under its marine insurance policy, which carried seven hundred fifty-six thousand dollars in agreed hull and machinery coverage alongside a sixty thousand four hundred eighty dollar deductible.
Marine Insurers Allege Breach of Survey Warranty and Outdated Fire Extinguisher Certifications
The complaint details multiple strict warranties contained within the yacht policy that the underwriters argue were breached before the casualty occurred. General policy conditions mandated that the insured obtain risk surveys, provide copies to underwriters, and complete all safety recommendations before any loss arose under penalty of policy voidance. When underwriters retained an independent marine surveyor to inspect the sunken Sunseeker in August 2026, the expert allegedly discovered that critical safety repairs from both 2022 and 2026 condition surveys had been left unaddressed. These unfulfilled items included deteriorated generator raw water exhaust hoses, unbonded thru hull fittings, and corroded electrical transformer housings in the lazarette. Additionally, underwriters uncovered that a portable fire extinguisher on board had not been inspected, weighed, or retagged within the required twelve-month cycle, displaying an outdated servicing tag from March 2024.
Complaint Alleges Violation of Utmost Good Faith and Material Misrepresentations on Insurance Renewals
Beyond express warranty breaches, the lawsuit asserts a formal count under the long-standing maritime doctrine of uberrimae fidei, or utmost good faith, alongside contractual misrepresentation claims. Underwriters contend that the yacht owner signed and submitted multiple letters of survey compliance certifying that all recommended mechanical and structural repairs had been satisfactorily resolved prior to policy inception and subsequent renewals. The complaint asserts that because these certifications were factually incorrect and concealed ongoing mechanical degradation, the insurers issued and renewed coverage on terms they otherwise would have declined or adjusted. Under controlling maritime law and contractual terms governed by New York substantive rules, any material non-disclosure or misstatement voids a marine insurance policy from inception regardless of whether the unperformed repairs directly caused the subsequent flood.
Underwriters Deny Sunseeker Engine Room Damage Under Wear and Tear Exclusions and Lack of External Accident
The legal filing also raises policy exclusions regarding general lack of maintenance, gradual deterioration, and the absence of an accidental external event. Insurers allege the true proximate cause of the Waterways Marina sinking was severe, long-term rot and perforation in the casing of the vessel centrifugal pump serving the air conditioning raw water circulation system. Photographs filed alongside the federal complaint show substantial corrosion and open holes through the pump casing, allowing seawater to flood the interior while the yacht sat docked under benign harbor conditions. Because the hull coverage excludes gradual degradation and specifically restricts machinery and electrical recovery to accidental external perils such as collisions, strandings, lightning strikes, or fires, the lawsuit maintains that the damage to the Sunseeker mechanical systems is entirely excluded.
Contact a Maritime Insurance and Marine Casualty Lawyer Today if You Face Coverage Disputes
Yacht owners, vessel operators, and maritime commercial entities navigating marine insurance disputes, survey warranty denials, or complex vessel sinkings can face aggressive efforts by underwriting syndicates to void coverage from inception. Marine policies frequently contain intricate warranties and strict federal admiralty principles that demand sophisticated legal navigation when casualties occur.
If you or your organization are involved in a yacht casualty or need assistance evaluating rights under a marine insurance contract, speak with an experienced maritime attorney today. Please visit https://holzberglegal.com/contact-us/ to contact our team for a consultation.
Disclaimer: Our firm does not represent the plaintiff in this case and is not involved in the litigation. The information provided is a summary of allegations based on publicly available court filings. We make no representations about the truth of these allegations, are not commenting on the merits of the case, and are not predicting any outcome.
