Start with the counterparty
A shipbuilding contract runs for years, and substantial installments leave the owner's account long before delivery. The technical risk is obvious. The counterparty risk starts earlier, with the first payment.
Review the legal entity that will sign the contract, and how it relates to the group brand above it. Who owns it? What has it delivered in recent years, and at what size? A yard stepping far beyond its established scale and technical range is carrying risk the owner will share. A full order book has consequences too: the project queues for the same engineers and trades as every hull ahead of it. Where accounts are available, the financial position deserves the same attention. If the contracting company sits inside a larger group, establish what the parent actually stands behind.
The same questions extend to critical subcontractors when the yacht leans heavily on specialist systems or an outsourced interior. A strong prime contractor manages that network. The owner still needs to know where the concentrated supplier risk sits.
What stands behind each installment
Shipbuilding contracts spread the purchase price across construction milestones, and the commercial logic is sound: the yard needs cash to buy material and keep the build moving. The owner's question is different. What happens if the project fails before delivery?
The answer depends on the contract and the jurisdiction. Some deals put a refund guarantee behind the installments. Others rely on escrow, or on title passing to the work in progress and to equipment as it is paid for. Termination rights sit underneath all of it. A refund guarantee earns its name only when a demand actually pays: its value depends on the guarantor, the conditions for drawing it, the amount covered and the documentary steps required to make a demand.
Maritime counsel should review these protections alongside the payment schedule, and the review has one job: establishing, installment by installment, exactly what the owner holds if the yard cannot finish the yacht.
Class, flag and the owner's team
Classification societies and flag administrations provide real independent oversight. Neither answers to the owner.
Class reviews construction and systems against its own rules and attends surveys within the class scope, while flag-state requirements address statutory compliance, which for commercial yachts can extend to yacht-code certification and safety-management audits depending on size and operation. The owner's technical team exists to verify something else entirely: that the yacht taking shape is the yacht the contract and specification describe.
The overlap is real but partial. Joinery can pass every class survey and still be unacceptable under the owner's finish standard, and a system that meets the statutory minimum can still miss the performance the specification promised.
Control the document trail
A large build generates paper for years. Drawings get approved and then revised. Change orders pile up. Every inspection, every class comment and every commissioning run leaves a record of its own.
Version control matters. If the owner's team and the yard are working from different revisions of that record, disputes are close to inevitable. Every approved change belongs in the controlled specification and drawing set rather than in an email thread.
A disciplined project also tracks open technical decisions and the owner's own approvals. Late answers from the owner's side cost schedule just as yard delays do, so the record should hold both parties to their response times.
Write the acceptance tests early
The buyer's leverage peaks before the shipbuilding contract is signed. Define the acceptance tests then.
A sea-trial protocol covers speed, maneuvering, steering, stabilizers, machinery loads and system performance. A noise and vibration guarantee means little until it names measurement locations and operating conditions, and a range figure without defined assumptions is marketing. Tank capacities and the deadweight and lightweight figures matter to the operational profile too.
The contract must separate material non-conformities from punch-list items that can wait until after delivery, and it must say how unresolved defects are documented and what security stands behind their correction. Without that framework, the final weeks of a build turn into a negotiation over standards everyone believed were settled two years earlier, conducted at the exact moment the owner wants the yacht and the yard wants its final payment.
Diligence continues after delivery
Delivery transfers ownership; it does not end the project. The first operating season finds what commissioning missed. Software misbehaves. Equipment fails in service. Finishes move and leaks appear.
Agree who receives warranty claims and how they are logged. Agree which costs the yard bears. And agree how work is handled when the yacht is an ocean away from the builder. Keep the commissioning records and written evidence of every defect; an informal conversation with a supplier proves nothing once a claim is disputed.
These articles are editorial and educational in nature; they are not legal, tax, customs, insurance or regulatory advice.