Canada's Teekay Corp has so far managed to keep Covid-19 off nearly all its vessels - bar two cases on a North Sea FPSO.
Speaking on a conference calls with analysts, chief executive Kenneth Hvid said the tanker and LNG carrier fleet had been coronavirus free, thanks to its employees' dedication to health and safety.
"We unfortunately did experience two Covid cases on the Hummingbird FPSO, but after a deep clean and full crew change we were able to fully restart operations and have had uninterrupted operations since," he added.
The unit has been working on the Spirit Energy-operated Chestnut offshore oil field in the North Sea.
At least one of the cases dates backed to April and involved a medical evacuation from Hummingbird.
Spare parts acquired
Hvid also said the company was well prepared to manage potential spare-parts shortages, with its teams identifying critical items and making advance purchases early in the outbreak, in anticipation of delivery challenges to both manufacturing and logistics.
"In addition, the teams have also been able to obtain class and flag extensions for vessels, which were due to drydock in the first half of this year," he added.
Strict measures were implemented to protect seafarers, while the vast majority of shore staff are working remotely from home.
"Crew changes on our gas and tanker fleets remain a major challenge for the industry, as most countries have placed restrictions on travel, visa applications and cruise disembarking from vessels," Hvid said.
"We're working with industry and intergovernmental organisations to tackle this challenge, while remaining in close, continuous contact and supporting our colleagues at sea through this period."