The decision arising from the casualty onboard Happy Aras [Unity Ship Group S.A. v Euroins Insurance JSC (The “Happy Aras”) [2026] EWHC 7] is a useful reminder that a General Average (GA) demand is not automatically payable simply because a GA adjustment is issued. GA may be defeated where the casualty is caused by the carrier’s actionable fault, including a causative failure to exercise due diligence to make the vessel seaworthy. For charterers (and their insurers), the case is a practical “how-to” on resisting GA where the evidence supports unseaworthiness at the commencement of the voyage.
What the court was asked to decide
Happy Aras was on a voyage from Reni, Ukraine to Mersin, Turkey when she grounded near the Datça Peninsula (south-east of Kos). Owners declared GA and the GA adjustment presented cargo interests (the voyage charterer, Diatold Trade Pte Ltd “DTP”) with a contribution of about USD 1.27m. Unity Ship Group S.A. pursued the contribution against Euroins Insurance JSC (the insurer of DTP) under an average guarantee requiring payment of sums “reasonably, properly and legally due.”
The legal pathway was anchored in York-Antwerp Rule D: even if a GA event is due to the fault of a party, GA rights are not automatically lost, but defences remain available in respect of that fault. In this case, the defence relied upon was “actionable fault” through breach of the Hague Rules obligation to exercise due diligence to make the vessel seaworthy “before and at the beginning” of the voyage.
The factual matrix that shaped the outcome
Evidence of the last hour pre-grounding was unusually thin. The vessel was not required to carry a VDR (being under 3,000 GT), and no GPS fixes were plotted or logged in the hour before the grounding, despite the plan calling for regular plotting. Public AIS data was therefore used to reconstruct the track.
On the facts accepted by the court, the Master (as OOW) departed from the planned track (“cut the corner”), sent the lookout below after dark, missed a key waypoint alteration, proceeded towards land at speed without meaningful corrective action, and did not make effective use of radar/bridge alarms.
Passage planning: defects are not a “silver bullet” unless causative
Like many post-CMA CGM Libra disputes, cargo interests alleged that the passage plan itself was defective. The plan was described as “basic” and criticised for lacking features commonly used in modern practice (for example, cross-track limits and clearer “no-go” areas).
However, the key evidential point was decisive: both experts agreed that, if the plan had been followed, the grounding would not have occurred. The court therefore held that the plan’s defects were not causative, and that the plan—though imperfect—did not of itself render the vessel unseaworthy. For charterers, the message is clear: passage planning remains a high-value line of attack, but it must be pleaded and proved with causation at the centre.
Crew competence and due diligence: where charterers found traction
The winning defence was causative incompetence of the Master, crossing the “wide gulf” between ordinary navigational negligence (typically protected by the Hague Rules navigation/management exception) and unseaworthiness. The court treated the Master’s failures as “numerous and egregious” and amounting to a “complete dereliction of duty,” meaning the vessel was unseaworthy at the material time.
Once causative unseaworthiness was established, the burden shifted to Owners to prove they exercised due diligence in appointing, training and supervising the Master. Owners failed to discharge that burden, and GA recovery failed.
Charterer-focused takeaways
For charterers facing a GA demand after a grounding/collision, Happy Aras highlights three practical themes.
First, reserve rights early: where GA security is required, ensure wording preserves defences and links payment to sums “properly and legally due,” rather than creating an unconditional payment obligation.
Second, investigate with a seaworthiness/due diligence lens. The most powerful GA defences often turn less on what happened in the minutes before the casualty, and more on what Owners can prove they did before sailing: competence vetting, appraisal/audit trails, SMS compliance, and voyage planning procedures.
Third, treat evidence as an operational priority. As with other charterparty disputes, causation and contemporaneous records often decide outcomes; AIS, logbooks, passage plans, SMS extracts, and document disclosure can be determinative when reconstructing events and assessing whether an alleged defect was causative.
This note is intended as general guidance for charterers and is not legal advice.
