Earlier this year BIMCO expanded their suite of offshore contracts by launching the new standard time charter for accommodation support vessels. Wikborg Rein participated in BIMCO’s drafting committee for the form, and set out an overview of its key features below.

The ASVTIME is intended for use in the renewables as well as oil and gas sectors of the offshore industry. Within a rapidly developing offshore wind industry, the form is a useful basis for chartering of walk-to-work vessels (WTWs) and service operation vessels (SOVs) – in particular as the offshore wind farms move further offshore. The form is based on SUPPLYTIME (the longstanding industry standard time charter for offshore service vessels), but incorporates several features from the WINDTIME (a form developed for crew transfer vessels in the offshore wind industry). The objective has been to develop a new form that builds on well-established industry precedents, all the while adding tailor-made features for vessels; these vessels have the primary function of providing accommodation for personnel performing offshore installation, operation, and maintenance work. BIMCO’s drafting committee consisted of members from Deme, Eni, Floatel International, Hagland Shipbrokers, Siemens Gamesa, Wagenborg, Wikborg Rein, and Ørsted.


In addition to the general description of the chartered vessel, it will be no surprise that ASVTIME contemplates a detailed specification of the accommodation, recreational facilities, office space, workshops, and other areas available for the charterer’s use, as well as the catering to be provided to the charterer’s personnel. The form also considers a detailed description and limitation of the number of charterer’s personnel permitted on board.

Vessels providing accommodation services may also perform ancillary functions that are very important for the charterer’s use of the vessel. ASVTIME therefore include provisions regarding optional equipment that may be available on the vessel, including walk-to-work gangways, cranes, an offshore bunkering system for charterer’s crew transfer vessels, and daughter crafts provided by the shipowners. The operational requirements for such optional equipment will need to be specified, as well as the environmental limits within which it can function. This equipment would generally not be available on a 24-hour basis, and the number of operational hours per day therefore also needs to be specified. Since “parallel operations” of the optional equipment may require particular planning, organisation, and use of the same specialised crew, the form allows for specification of if and when such parallel operations may be required by the charterers.

Off-hire and reduction of hire

The new form offers a traditional off-hire regulation for situations where the vessel is prevented from working, during which the charterer’s payment obligation is suspended. In case of breakdown or unavailability of any of the optional equipment, the off-hire regulation may however not be satisfactory. From the shipowner’s perspective, the vessel is still providing the key vessel- and accommodation functions, and the shipowner should therefore receive remuneration for the same. In such a case, the charterer may face issues due to the unavailability of the optional equipment, but may not be able to substantiate that the vessel is prevented from working or that there is a loss of time resulting in a corresponding off-hire period.

ASVTIME seeks to resolve this challenge by introducing a separate regime. In this regime, parties can specify a percentage by which the hire may be reduced – in the case of unavailability of the optional equipment – upon entering into the contract. The regime is not, however, mandatory. It provides that the charterers may request the continued performance of the vessel without the optional equipment, but at a reduced rate. If the shipowners consent, the reduction of hire applies. If the consent is not forthcoming, the charterers would need to rely on the general off-hire regime to the extent applicable.

Extended offshore operations and offshore bunkering

Another typical aspect with vessels providing accommodation services is that they may remain at the area of operation for extended periods of time, and not have regular port calls such as other offshore service vessels. Issues that arise in relation to such extended offshore operations are addressed in a separate clause. This clause divides the responsibilities for crew change, delivery of fuel, stores, and other provisions, as well as vessel surveys or inspections that cannot be undertaken offshore. The provision is based on a special annex to SUPPLYTIME that has recently been developed by BIMCO. Given that provisions in this annex are likely to be very relevant for vessels providing accommodation services, it was decided to include them in the ASVTIME.

The form also includes provisions for the use of an offshore ­bunkering system on the vessel, for ­bunkering of crew transfer vessels provided by the charterers. The provisions thereby seek to provide a contractual framework for a common practice in the ­offshore wind industry.

Other key features

Several other key features in ASVTIME should be noted, including that:

  • Delayed delivery is addressed in a similar way as under WINDTIME. In addition to the right to cancel the charter, parties need to specify if the charterers would (i) be precluded from claiming damages, (ii) be able claim damages based on the applicable background law or (iii) be allowed specified liquidated damages.
  • Charter period extension to complete the immediate task undertaken is adjusted for the contemplated scope of use of the form.
    Fuel is traditionally provided by the charterers under a time charter, but ASVTIME includes the ability for this to be provided by the shipowners and reimbursed by the charterers to reflect a common practice in the offshore wind industry.
  • Maintenance allowance amounts to 24 hours per month on a cumulative basis. During such periods the vessel will remain on-hire whilst performing maintenance, dry-docking, statutory, or mandatory surveys or inspections. However, unlike in SUPPLYTIME, the reference to “repair” is not included in order to avoid maintenance allowance used for repair of damages, rather than solely preventative repairs. Surveys are furthermore only included to the extent that they are “statutory or mandatory”.
  • Liabilities and indemnities follow the typical structure in offshore contracts with a knock-for-knock liability regime for damage to personnel and property. This with the aim of a shipowner only being responsible for pollution emanating from the vessel, and mutual exclusion of special, indirect, and consequential losses. Similarly to WINDTIME, there is also an ability to specify a cap on the parties’ contractual liability. However there is no default size of the cap, as it was considered more appropriate for the parties to decide this on a case-by-case basis rather than BIMCO making a generic suggestion. Further, the insurance obligations have been made mutual between the parties, and the annex for insurances have also been updated to reflect industry practice for these types of vessels. We consider it to be a particularly positive development that yet another (of very few) standard contracts for vessels in the offshore wind industry includes knock-for-knock as the applicable liability model.
  • Certain adjustments linked to the key accommodation service are also made in the infectious or contagious diseases, war risk, and ice clauses. The adjustments are made to reflect that the vessels will typically not carry any substantial cargo, but rather have a large number of people on-board.


Although the SUPPLYTIME is intended for offshore support ­vessels, it has in practice also been used for decades with bespoke adjustments for accommodation service vessels in the offshore oil and gas industry. By developing a specialised form for accommodation service vessels, BIMCO has provided yet another useful standardisation for the benefit of industry participants. Although the market for these types of units is relatively small, the form will hopefully be of particular use for vessels in the offshore wind industry as it continues to develop.

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