Police have seized two BMW motorcycles believed to have been taken from the stricken tanker MSC Napoli.
Wreckage from the Napoli on the beach at Branscombe
The bikes were found at a firm's compound near Axminster in east Devon. No arrests have been made.
The 800cc BMW motorcycles are thought to be from the MSC Napoli which was beached off Devon on 20 January.
Seventeen motorcycles were taken from containers washed off the wreck, of which 13 have been reported to the Receiver of Wreck.
The Napoli was deliberately grounded in Lyme Bay off Branscombe beach amid fears she could sink during a tow to Portland. She had suffered hull damage in a storm during which her 26 crew were rescued.
She was carrying more than 2,000 containers, of which 110 went overboard and 58 were washed ashore, sparking a scavenging spree in which items were taken.
All items taken from the coastline had to be reported to the Receiver of Wreck before 20 February.
Failure to do so could result in a fine of up to £2,500 and having to pay the owner twice the value of the item.
The Receiver of Wreck, Sophia Exelby, said about 1,400 items had been reported, which she said was a "fair response".
"I am reasonably pleased the majority of people have reported items and have shown themselves to be law abiding," she said.
The MCA is helping Ms Exelby to recover lost items.
The owner of the ship, Zodiac Maritime, has also appointed private contractors to recover all items lost overboard and washed ashore.
All above-deck containers on the Napoli have now been removed by salvagers and work has begun on removing the containers in the ship's holds.