(CNN) — Researchers in Canada have released new images of a remarkably well-preserved shipwreck that will shed new light on the ill-fated 1845 Arctic expedition in which famed British explorer John Franklin died.
The wreck of HMS Terror has effectively been "frozen in time" thanks to the cold, deep waters of Terror Bay in Nunavut, Canada, and a layer of silt which has preserved artifacts such as maps, logs and scientific instruments, according to a study by Parks Canada in conjunction with Inuit researchers.
HMS Terror and HMS Erebus set off from England in 1845 in search of a route across the North-West Passage but got stuck in sea ice, forcing the 129 crew members to abandon ship in 1848. The men died one by one attempting to walk to safety across the Arctic.
Photos and video footage were gathered using a remotely operated vehicle (ROV), in what the agency describes as "one of the largest, most complex underwater archaeological undertakings in Canadian history."
Researchers used the ROV to explore 20 cabins and compartments on the ship, the first time the interior of HMS Terror had been systematically explored, according to a Parks Canada statement.
Artifacts have been well preserved thanks to the cold water, lack of natural light, and a layer of silt.
Ryan Harris/AFP/Getty Images
"The impression we witnessed when exploring the HMS Terror is of a ship only recently deserted by its crew, seemingly forgotten by the passage of time," said ROV pilot Ryan Harris.
The team got images from over 90% of the ship's lower deck, including living quarters.
The captain's cabin is the biggest treasure trove - and also the best preserved part of the lower deck - with closed map cabinets, a tripod and a pair of thermometers already identified.
Behind a closed door lies the captain's sleeping quarters, the only part of the lower deck that archeologists could not explore.
The team believes that written documents will have been preserved because the water temperature is zero degrees Celsius or lower, there is no natural light, and sedimentation helps to preserve organic material such as paper by making for an environment where less oxygen is present.
Underwater archeologists said the findings surpassed expectations.
Ryan Harris/AFP/Getty Images
Marc-André Bernier, manager of underwater archeology at Parks Canada, said the condition of the captain's cabin greatly surpasses expectations.
"Not only are the furniture and cabinets in place, drawers are closed and many are buried in silt, encapsulating objects and documents in the best possible conditions for their survival," said Bernier in a statement.
"Each drawer and other enclosed space will be a treasure trove of unprecedented information on the fate of the Franklin Expedition."
Researchers will now analyze the discoveries on HMS Terror in order to gain a better understanding of what happened on board the ship, and hope to eventually build a picture of the lives of individual crew members.
"The excellent condition of the ship will, I hope, mean that there will soon be answers to so many questions about the fate of the Franklin Expedition, shrouded in mystery since 1845," said Susan Le Jeune d'Allegeershecque, British High Commissioner to Canada.
Canada and the Inuit will jointly own the new-found artifacts from HMS Terror and HMS Erebus under a 2018 agreement.
HMS Terror was spotted on the sea bed off King William Island in September 2016, and HMS Erebus was found in September 2014.
Franklin's last expedition was "the worst disaster in the history of British polar exploration," according to the Royal Museums Greenwich.