Norway's DOF Group has managed to extend a debt standstill deal into next year, but support from lenders has waned.
The Oslo-listed owner of offshore support vessels said the payment freeze has been stretched to 31 January from 30 September previously.
The move does not include the emergency loan of NOK 100m ($10.76m) taken out in March, however.
Lenders representing 83% of the secured debt have signed up to the new deal, down from 91% for the earlier agreement.
The level of support for its subsidiary DOF Subsea's debt remains at 88%.
A standstill agreed with Brazilian Development Bank (BNDES) for another subsidiary, Norskan Offshore, will expire on 31 December.
Action needed in Brazil
DOF will then either have to agree an extension, or seek permission from its other lenders to pay instalments to BNDES again.
The company is trying to implement a long-term financial restructuring of $2bn of bank and bond debt after years of difficult market conditions.
DOF had called a meeting of bondholders on 30 September, at which these creditors also signed up to stretch the freeze.
In July, DOF said one of its rebel lenders had demanded repayment of a $47m loan.
The shipowner, hit by a severe downturn in the offshore vessel sector, said at the time that under the terms of the standstill agreement, the group was not allowed to make any payment to the lender, but it pledged to keep talking.
The company had imposed a unilateral freeze on those lenders that had not agreed to the payment freeze.
Separately, DOF announced Norwegian energy major Equinor has declared an option to keep the 31,637-hp anchor-handling tug supply vessel Skandi Vega for another 18 months on top of the six months already contracted.
The ship will now be employed until May 2022.
The Skandi Vega has worked continuously with Equinor since 2010.
DOF chief executive Mons Aase said: "DOF is delighted to further strengthen the relation with Equinor and to secure firm backlog."
Last month, DOF had to hand its 50% share of AHTS joint venture DOF Deepwater to its partner, Akastor, as part of a debt deal. DOF Deepwater has a fleet of five ships.
Oil services company Akastor is controlled by Norwegian investor Kjell Inge Rokke, a shareholder in rival Solstad Offshore.
