Ocean Network Express has begun discharging containers from the fire-damaged 8,212-TEU ONE Henry Hudson at the Port of Los Angeles, marking a new phase in what the US Coast Guard called one of the most complex salvage operations in recent port history, reports Ventura, California's gCaptain.

The vessel remains at Yusen Terminal after water removal and distressed cargo extraction were completed on January 12. Full discharge operations are scheduled to begin mid-week, according to the company's advisory.

US Coast Guard Capt Stacey Crecy said the response required exceptional coordination, from firefighting and relocation to anchorage, to returning the vessel to the pier. He added that damaged cargo and firefighting water will now be properly removed and disposed of.

The fire broke out in late November in lower-deck compartments while the ship was moored. All 23 crew members were evacuated as nearly 200 firefighters responded. A mid-ship explosion knocked out power, forcing crews to withdraw and fight the blaze from the pier.

General Average surveyor Ken Shortall has begun arranging cargo surveys. The vessel's owner, Fukujin Kisen, has declared General Average, meaning cargo will not be released until arrangements are finalised with adjuster Richards Hogg Lindley.

Cargo hold 03 was flooded up to 80 per cent during firefighting. Salvage firm DONJON-SMIT mobilised specialists worldwide, while contaminated water and waste were disposed of under an approved plan at licensed facilities.

The fire temporarily shut down four of seven container terminals and forced closures along State Route 47 due to smoke. The Coast Guard and National Transportation Safety Board are investigating the cause.

Once General Average and salvage-security requirements are cleared, Los Angeles imports will be released at Yusen Terminal. Oakland-bound cargo may be collected in Los Angeles or railed north, while exports will continue unless customers request changes.