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Yacht Design Agreements: Class Approval, Flag State Rules and the Buildability Warranty

Authors
Uğurcan TekinŞevval Ezgi DemirUğurcan Tekin · Şevval Ezgi Demir
Published26 August 2026
Reading time10 min
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CategoryMaritime & IP
Published26 August 2026
Authors
Uğurcan TekinPartner
Şevval Ezgi DemirAttorney at Law
Contents01Not an Aesthetic Drawing, a Buildable Project02Classification Societies: the Project's First Examination03Flag State and Registration: the Second Examination04The Revision Regime: Separating Aesthetic Requests from Technical Necessity05Rights in the Design: Whose They Are, and When They Pass06The Financial Balance: Instalments, Phase Approvals and Penalties07A Checklist Before Signature08Sources
SummaryÖzet

One fact separates yacht design agreements from other contracts for work: the drawing must eventually go to sea. A concept that displeases is redrawn; but a yacht design that cannot pass the scrutiny of a classification society is not a buildable project for the shipyard. It is a beautiful illustration, and once steel has been cut against it, an expensive one. Yacht design agreements must therefore carry two distinct legal layers in a single text. On one side stand the contract-for-work provisions of the Turkish Code of Obligations (Articles 470 et seq.) together with the intellectual property regime; on the other, the maritime layer made up of class rules, flag state requirements and safety-of-navigation standards. This article aims to make visible the second layer, the one most often skipped at the negotiating table.

Disputes begin where the parties use the same word with different meanings. To the designer, the design is an aesthetic and artistic whole: exterior lines, silhouette, deck arrangement, interiors. To the shipyard and the owner, the design is a technical foundation on which construction will stand. If the contract fails to reconcile those two understandings in a single definition, the conflict starts with the very first delivery. A well-built yacht design agreement leaves the aesthetic side of the work to the designer's creative domain, while anchoring the project's fitness for the sea, the registry and the insurer in clear, measurable technical warranties subject to third-party verification.

The project born at the drawing board reaches the water through class, registry and shipyard; the contract is the map of that journey.
01
Not an Aesthetic Drawing, a Buildable Project

The legal foundation is the contract for work: the designer owes a result, and that result is not merely an admired visual but a project that can actually be built in a shipyard environment. The most useful clause at this point is the undertaking known in practice as the buildability warranty: the designer guarantees that the project is not a mere visual illustration but is workable in terms of hydrodynamics, statics and construction technique. On paper the warranty looks heavy; its consideration is concrete. Geometric drawing errors, volume and weight miscalculations and material incompatibilities tend to surface after the steel has been cut, at the most expensive point of no return. Who bears the wasted material, the lost labour and the shipyard's delay costs depends precisely on how this warranty is drafted.

The other half of the same heading is the manner of delivery. For the shipyard's engineers to analyse the project and take it into production, the designs must be delivered not only in locked or read-only formats but also in raw, editable digital formats. A clause providing for the complete delivery of editable files, material schedules and model data after final approval closes off, in advance, the post-delivery argument about who holds the files and in what format. Seen from the designer's side, the same clause provides clarity of its own: until it is defined what counts as delivered, it cannot be defined which instalment has been earned.

02
Classification Societies: the Project's First Examination

The gateway to the maritime layer is the classification society. Independent certification bodies such as RINA and Lloyd's Register audit the safety and minimum structural standards of vessels, and in practice conformity with class rules is the de facto precondition for a yacht to sail international waters, to be insured and to be financed. A shipyard will not cut steel for a project that is plainly not going to pass class; an insurer has no appetite for pricing an unclassed build. Delivering a design that conforms to class rules must therefore be written into the contract not as an ornamental aspiration but as the designer's core obligation: the project shall be delivered in a condition capable of passing the society's review confirming that nothing in the design fundamentally obstructs the yacht's construction.

One more feature makes class approval valuable to the contract: its objectivity. The owner's aesthetic taste is subjective and arguable; the class surveyor's report is the technical finding of an independent third party. Corrections and revisions returned by class are therefore placed under a separate regime: revisions caused by the designer's drawings, material choices or arrangement defects are made, as a matter of professional responsibility, at no additional charge and at a pace that does not disrupt the construction schedule. And where class approval cannot be obtained through the designer's fault, the matter lands squarely in defective-performance territory under the contract for work. That debate is always cheaper to regulate in the contract than to conduct in court.

03
Flag State and Registration: the Second Examination

Every yacht is registered with a flag state and goes to sea subject to that state's rules. The choice of flag is a commercial decision; it carries tax, operational and confidentiality consequences and usually belongs to the owner. But the face it turns toward the design is technical: for the vessel to be registrable, the design must conform, in its design characteristics, to the rules of the intended flag state and to the fundamental international standards of maritime safety. Because the requirements of private and commercial yacht regimes can differ, the contract should state expressly for which use and registration objective the design is being drawn. And if the objective later changes, whether that constitutes a revision or a new engagement should be settled from the outset.

The non-negotiable core of this layer is safety of navigation and of life. Well-drafted contracts express it as an explicit hierarchy: the designer may not, under any circumstances, endanger structural integrity or safety of life at sea on aesthetic grounds. The clause does not restrict the designer's creativity; it protects the designer. For if the contract does not say who decides when an aesthetic preference collides with a safety requirement, that decision ends up being made on the shipyard floor, under pressure and without a record. Years later, in the liability debate, everyone believes their own recollection.

“A class certificate is not a piece of paper; it is the design's licence to go to sea. The question the contract must answer is whose obligation it is to earn it.”
04
The Revision Regime: Separating Aesthetic Requests from Technical Necessity

Revision is inevitable in yacht projects; the problem is not its existence but the mixing of its kinds. A sound contract separates two streams. The first is the stream of technical necessity: corrections returned by the classification society, required by flag state rules, or caused by defects in the design itself. These belong to the designer's professional responsibility; they attract no additional fee and run on the construction schedule. The second is the stream of aesthetic and commercial requests: changes born of the owner's taste, marketing objectives or a shift of concept. That stream needs an order of its own: the work is divided into phases, each phase is closed by written approval, silence never counts as approval, and reopening an approved phase is discussed and priced separately. Where the two streams are merged into one clause, and an unlimited revision right sits beside a no-extra-fee rule, the designer's workload and calendar become unpredictable. That is a problem not only for the designer but for the project waiting on a delivery date.

The third source of revision is the project's other actors: the shipyard engineers' implementation corrections, the equipment manufacturers' technical schematics, the class surveyors' findings. The designer is obliged to work these inputs into the drawings and to produce the architectural solutions that preserve the design's visual integrity through the integration. What needs balancing here is the burden of coordination: if the designer's delivery schedule must run in step with the shipyard's construction schedule, then the timing and format of the third-party data the designer depends on must be committed in the same contract. Synchronisation imposed on one side only is not synchronisation.

05
Rights in the Design: Whose They Are, and When They Pass

However heavily the technical layer weighs, there is intellectual labour at the centre of the project, and its transfer follows formal rules of its own. Contracts concerning economic rights must be made in writing, with the rights being assigned listed individually (Article 52 of the Turkish Copyright Act); a blanket assignment sentence may fail that test. Designs not yet drawn call for particular care: the Copyright Act attaches no effect to a disposition of rights in a work that does not yet exist and recognises only an undertaking to assign (the regime of Articles 48 and 50). The sound structure is an undertaking at signature, followed by a separate assignment executed against a delivery protocol as each design is delivered. The appearance itself may additionally be registered as a design under the Industrial Property Code; recalling that an unregistered design is protected for only three years from the date it is first made available to the public, it matters to whom the contract allocates the registration strategy and the authority to file. The final link is the team: as a rule, the economic rights in works created by employees in the performance of their duties are exercised by the employer (Article 18), but that presumption does not reach the independent modelling studios and freelance architects engaged from outside. If no written assignment has been taken from them, the chain passing to the owner has a broken link. Allocating the fate of rejected drafts in the same clause forecloses a portfolio dispute years down the line.

06
The Financial Balance: Instalments, Phase Approvals and Penalties

The financial counterpart of the technical warranties is a payment schedule tied to phase approvals: measurable thresholds such as concept approval, class approval and delivery of the construction drawings give the owner control and the designer predictability. If withholding and set-off mechanisms are to be recognised, their limits must be written: which items, for how long, with what exit right. In penalty clauses, the parties' status is decisive: the Turkish Code of Obligations empowers the judge to reduce a penalty found excessive (Article 182), while in relationships where the debtor is a merchant the Turkish Commercial Code largely closes off that reduction (Article 22). Non-compete and exclusivity covenants must pass through the same proportionality filter: a restraint limited by subject, duration and territory is both fairer and more resilient against a validity challenge.

07
A Checklist Before Signature
  • Write the buildability warranty in plain terms: the project will be delivered buildable at a shipyard, not merely visual, and the cost allocation for drawing and calculation errors will be explicit.
  • Make conformity with class rules the designer's core obligation; regulate mandatory class-driven revisions as free of charge and bound to the construction schedule.
  • Name the intended flag state and use regime (private/commercial) in the contract; settle from the outset whether a change of objective is a revision or a new engagement.
  • Separate the aesthetic-revision stream from the technical-necessity stream; divide the work into phases closed by written approval, and exclude implied approval.
  • Provide expressly for delivery of raw, editable files, material schedules and model data after final approval.
  • Draft the transfer of rights by enumeration under Article 52 of the Turkish Copyright Act; build the undertaking-plus-assignment-on-delivery structure for future designs; document the subcontractor chain.

The yacht design agreement is one of the rare documents in which two disciplines must be spoken at once: the contract for work and intellectual property on one side, class rules, flag state requirements and safety of navigation on the other. Most drafts in circulation speak only one of the two languages. A text from an intellectual property lawyer's desk skips the realities of the sea; a text of maritime origin skips the formal rules governing intellectual labour; and in either case the other layer's risks silently settle on one of the parties. The framework of this article was born of precisely that need: it distils the experience of matters on which our intellectual property and maritime law teams worked side by side on the same contract text, showing how the two layers meet in a single document. The good news is that nearly all of those risks can be managed with a few right questions asked before the day of signature: which scrutiny will the project pass, which registry will it enter, who pays for which error, and all of it on what calendar?

08
Sources
  • Turkish Code of Obligations No. 6098, Articles 182 and 470 et seq.; Turkish Commercial Code No. 6102, Article 22
  • Law on Intellectual and Artistic Works No. 5846, Articles 18, 21-25, 48, 50 and 52; the design provisions of the Industrial Property Code No. 6769
  • International Association of Classification Societies (IACS): general information on classification societies and their role
  • mevzuat.gov.tr: current texts of the cited statutes
Uğurcan TekinPartnerŞevval Ezgi DemirAttorney at Law
Related practice areaMaritime, Yachting & Shipyard Law→

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