MyYachtsInsurance - Yacht Insurance Community

Reviewed by Alex Short, Independent Yacht Insurance Risk Analyst

TL;DR

Hull coverage in yacht insurance policies protects the physical structure of the vessel under hull and machinery policies. Coverage is void if damage results from faulty workmanship, failure to notify insurers of refits, or non-compliance with ICOMIA Superyacht Refit Standard 2021 [ICOMIA-REFIT-STD-2021] or Lloyd's Register Rules the corresponding regulatory requirements Chapter 2 [LR-RULES-2024-PT1-CH2]. Contractors' exclusion clauses typically remove coverage for work performed by third parties unless explicitly endorsed.

Trigger Conditions

Trigger	Policy Impact	Consequence
Material change not disclosed	Hull coverage clause	Coverage void if change affects structural integrity [ICOMIA-REFIT-STD-2021]
Class suspended or withdrawn	Class compliance condition	Hull coverage excluded until class reinstated [LR-RULES-2024-PT1-CH2]
Refit/lay-up not notified within 30 days	Notification of refit clause	Claims denied for damage arising from undisclosed refit [ICOMIA-REFIT-STD-2021]
Hot work without approval	Hot work exclusion clause	Coverage void for fire or explosion damage [NFPA-51B-2024]
Contractor assumes custody	Contractors' exclusion clause	Hull damage during third-party work excluded [LR-RULES-2024-PT1-CH2]
Survey overdue	Survey compliance condition	Hull coverage suspended until valid survey obtained [BV-NR500-2024-PT2-CH6]

Underwriter's Checklist

Survey reports: Underwriters verify the vessel’s physical condition, structural integrity, and valuation to assess risk exposure and determine appropriate coverage limits [LR-RULES-2024-PT1-CH2] [BV-NR500-2024-PT2-CH6].
Class certificates and status: Underwriters confirm the vessel is in good standing with a recognized classification society to ensure compliance with structural and safety standards [IACS-UR-A2] [DNV-RU-SHIP-PT1-CH3].
Maintenance logs: Underwriters review records of routine and emergency maintenance to evaluate the owner’s commitment to preserving the hull and preventing deterioration [ISM-CODE-SEC9] [IMO-FSS-CODE-CH7].
Refit/modification records: Underwriters assess whether all modifications or refits were performed in accordance with ICOMIA and classification society standards to maintain hull integrity [ICOMIA-REFIT-STD-2021] [ABS-GUIDE-HOTWORK-2023].
Crew qualifications: Underwriters verify that crew members involved in hull maintenance or hot work are certified and trained to prevent accidents and ensure safe operations [AWS-D36M-2017] [OSHA-1915-SUBPART-D].
Navigation area endorsements: Underwriters confirm the vessel is operating within its certified navigation area to ensure hull coverage remains valid under the policy terms [SOLAS-CH2-REG19] [MCA-MGN-280].
Loss history declarations: Underwriters analyze prior claims and incidents to evaluate the vessel’s risk profile and potential for future hull damage [HSE-HSG-168] [NFPA-51B-2024].
Fire protection system certifications: Underwriters verify that onboard fire protection systems, including water-spraying and firefighting equipment, are up to code and functional [IMO-FSS-CODE-CH7] [ABS-GUIDE-HOTWORK-2023].

Policy Wording Traps

Clause Type	Trap Mechanism	Scenario	Coverage Result
Care, Custody, and Control	Requires owner to maintain control of the vessel	Owner leaves the yacht unattended during a refit, leading to a fire [NFPA-303]	Claim denied due to failure to maintain control
Contractors' Exclusion	Excludes damage caused by third-party contractors	A contractor causes a hull breach during hot work [NFPA-51B-2024]	Hull damage not covered under policy
Consequential Damage	Limits coverage to direct physical loss	Hull damage leads to engine failure due to water ingress [IMO-FSS-CODE-CH7]	Engine failure not covered as consequential damage
Latent Defect Carve-Out	Excludes damage from pre-existing hidden flaws	A crack in the hull from a prior impact causes failure [IACS-UR-A2]	Claim denied due to latent defect
Faulty Workmanship Exclusion	Excludes damage from poor repair or construction	Poorly executed underwater welding leads to hull leakage [AWS-D36M-2017]	Hull damage not covered due to faulty workmanship

Operational Reality

Yard operators frequently delay submitting updated hull condition reports after dry-docking, leading to underwriters rejecting claims due to incomplete documentation [ISM-CODE-SEC9]. Owners often assume that visual inspections by the yard are sufficient, but class societies such as Lloyd's Register or Bureau Veritas require formal written reports from certified surveyors before reclassification [LR-RULES-2024-PT1-CH2]. Surveyors typically inspect the hull during and after dry-docking, but their involvement is contingent on receiving prior notice from the yard or owner, which is often not provided in time. Underwriters may require proof of compliance with IACS Unified Requirement A2 for shipboard fittings [IACS-UR-A2], which is not always verified during routine maintenance. Common mistakes include failing to document hot work performed during refits without fire prevention measures in line with NFPA 51B [NFPA-51B-2024], or not securing class approval before resuming operations. These oversights can result in coverage denial or extended underwriting review periods. The yard is responsible for coordinating with the surveyor and ensuring all paperwork is submitted to the underwriter within the policy notification period. Delays in this process can prolong insurance reinstatement and increase operational downtime.

Related Risks

Hull breach due to improper underwater welding → May not be covered under hull damage if the work violates AWS D3.6M:2017 standards [AWS-D36M-2017]
Fire incidents during onboard hot work → Excluded under hull coverage if non-compliant with NFPA 51B:2024 or OSHA 29 CFR 1915 Subpart D [NFPA-51B-2024][OSHA-1915-SUBPART-D]
Structural failure from non-compliant shipboard fittings → May void hull coverage if fittings do not meet IACS Unified Requirement A2 [IACS-UR-A2]
Inadequate fire suppression systems during refit → Could trigger exclusion under hull coverage if systems do not align with ICOMIA Superyacht Refit Standard 2021 or IMO FSS Code Chapter 7 [ICOMIA-REFIT-STD-2021][IMO-FSS-CODE-CH7]

Questions for Your Broker

Does the policy specify coverage limits for hull damage caused by fire, and does it reference compliance with fire protection standards such as NFPA 303 [NFPA-303] or IMO FSS Code Chapter 7 [IMO-FSS-CODE-CH7]?
Are there sub-limits for hull damage resulting from hot work, and does the policy require adherence to OSHA 29 CFR 1915 Subpart D [OSHA-1915-SUBPART-D] or NFPA 51B [NFPA-51B-2024] during such operations?
Does the policy exclude hull damage from underwater welding, and does it reference compliance with AWS D3.6M:2017 [AWS-D36M-2017] or IACS Unified Requirement A2 [IACS-UR-A2]?
What documentation is required to substantiate a hull claim, and does the policy reference compliance with ICOMIA Superyacht Refit Standard 2021 [ICOMIA-REFIT-STD-2021] or HSE HSG168 [HSE-HSG-168]?
Under what conditions does the deductible apply for hull damage, and does the policy reference compliance with DNV Rules for Ships the corresponding regulatory requirements Chapter 3 [DNV-RU-SHIP-PT1-CH3] or Lloyd's Register Rules the corresponding regulatory requirements Chapter 2 [LR-RULES-2024-PT1-CH2]?
Does the policy require prior notification for hull repairs, and does it reference compliance with SOLAS Chapter II-1 Regulation 19 [SOLAS-CH2-REG19] or Bureau Veritas NR 500 the corresponding regulatory requirements Chapter 6 [BV-NR500-2024-PT2-CH6]?

References

ICOMIA Superyacht Refit Standard 2021 (other) — https://www.icomia.org/icomia-superyacht-refit-group-2025/
Lloyd's Register Rules the corresponding regulatory requirements Chapter 2 (class) — https://www.lr.org/en/knowledge/lloyds-register-rules/rules-and-regulations-for-the-classification-of-ships/
NFPA 51B: Fire Prevention During Welding, Cutting, and Hot Work (safety) — https://www.nfpa.org/codes-and-standards/nfpa-51b-standard-development/51b
Bureau Veritas NR 500 the corresponding regulatory requirements Chapter 6 (class) — https://erules.veristar.com/dy/data/bv/pdf/500-NR_2024-10.pdf
IACS Unified Requirement A2 (Shipboard Fittings) (framework) — https://ww2.eagle.org/content/dam/eagle/regulatory-news/2022/IACS-UR-A2.pdf
DNV Rules for Ships the corresponding regulatory requirements Chapter 3 (class) — https://www.dnv.com/rules-standards/index.html
ISM Code the relevant section (Reports and Analysis) (framework) — https://www.classnk.or.jp/hp/pdf/activities/statutory/ism/ism_cd/ism-code-e.pdf
IMO FSS Code Chapter 7 (Water-Spraying Systems) (framework) — https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/MSCResolutions/MSC.98(73).pdf
ABS Guidance Notes on Fire-Fighting Systems (class) — https://ww2.eagle.org/en/rules-and-resources/rules-and-guides.html
AWS D3.6M:2017 Underwater Welding Code (manufacturer) — https://pubs.aws.org/Download_PDFS/D3.6M-2017PV.pdf
OSHA 29 CFR 1915 Subpart D (Welding, Cutting, Heating) (framework) — https://www.osha.gov/laws-regs/regulations/standardnumber/1915/1915SubpartD
SOLAS Chapter II-1 Regulation 19 (framework) — https://imorules.com/SOLAS_REGII-1.html
MCA Marine Guidance Note 280 (framework) — https://assets.publishing.service.gov.uk/media/5f23e4bbd3bf7f1b0a3a7f1e/MGN_280.pdf
HSE HSG168: Fire Safety in Construction (safety) — https://www.hse.gov.uk/pubns/priced/hsg168.pdf
NFPA 303: Fire Protection for Marinas and Boatyards (framework) — https://www.nfpa.org/codes-and-standards/nfpa-303-standard-development/303

Disclosure

This content is provided for informational purposes only and does not constitute insurance advice. Coverage terms vary by policy, jurisdiction, and underwriter. Consult a licensed marine insurance broker for guidance specific to your vessel and operations.