At least 54 people have died and 15 are missing after a Russian freezer trawler carrying an international crew of 132 sank in far-eastern Russia.
The Dalniy Vostok went down in the Sea of Okhotsk off the Kamchatka Peninsula, 330 km (205 miles) west of the Krutogorovsky settlement, at around 6.30am (8.30pm GMT Wednesday).
Emergency services in Kamchatka, citing the head of the rescue operation, said 63 crew members were rescued, many of whom were suffering from hypothermia.
The fate of the remaining 15 from the Dalny Vostok trawler is currently unknown.
No cause for the sinking was given, but the Interfax news agency said that large amounts of drifting ice may have damaged the body of the ship.
The trawler sent no distress signals prior to sinking, Interfax said.
Viktor Klepikov, coordinating captain of the Petropavlovsk-Kamchatsky maritime rescue coordination centre, said: "The rescue operation is going on, we are still looking for 15 people."
Russian news agency Tass reported rescuers as saying they had recovered the bodies of the 54 victims.
Among the 132 crew members, 78 are from Russia, 42 from Myanmar and the rest from Latvia, Ukraine and Vanuatu.
The Russian Emergencies Ministry sent an Mi-8 helicopter with rescuers and doctors aboard to deliver medical assistance and transport rescued crew members to hospitals in the city of Magadan, the ministry said on its website.
It also set up a telephone hotline for families of the crew.
The search and rescue operation involved 1,300 people and 29 units of equipment, emergency services said.
Russia is known for its poor air, road and water safety record. In 2011, an overcrowded tourist boat sank in the Volga River, killing nearly 130 people.
Full list of Russians who were on board the sunken ship (updated):
AN Pritotsky - Captain director.
Zhelomeev AV - Art. mate.
A. Gray - Second mate.
Martyniuk AP - Third mate - ALIVE
Shishkov AV - The fourth mate.
Prokopovych AY - Boatswain.
Kosin SV - Assistant kapitata on the SE.
Abdulaev FS - Seaman 1st class - ALIVE
Vakhromeev EV - Seaman 1st class.
Safarov MS - Seaman 1st class.
Garbu EF - Seaman 1st class.
Shtukator EY - Seaman 1st class - ALIVE
Gisimenko DN - Seaman 1st class.
Filatov RD - Seaman 1st class - ALIVE
Boykov V. - Seaman 1st class - ALIVE
Sadigov IG - Seaman 1st class - ALIVE
Gusev AL - Seaman 1st class - ALIVE
Grigorenko EV - Seaman 1st class - ALIVE
FILONENKO RA - Seaman 1st class.
Kischik VV - Chief Engineer - ALIVE
Ogiev RG - The third mechanic.
Talybov MU - Fourth mechanic - ALIVE
Akimov AA - The second email. mechanic.
Dobrovolsky AA - The third e-mail. mechanic.
Rozhin VV - Ref. mechanic.
Pronkin AA - Ref. mechanic.
AN Ponomarev - Ref. mechanic - ALIVE
AS Kozhik - Ref. mechanic.
Komarenko SN - Art. minder.
Fomin JK - Minder 1st class - ALIVE
Nemirovich AV - Minder 1st class - ALIVE
Borisov AV - Minder.
Materranov MG - Minder.
D. DE - Motor - ALIVE
Ryabov SS - Electrician - ALIVE
OM Kissel - GES - ALIVE Shtantser SN - Electrician. Khuzhin RR - Turner - ALIVE Rakhimov AM - Art. master processing. Chernenko VV - The master processing. Aliev ES - The master processing - ALIVE Rudakov N. - Art. master production. Hasanov SI - The master output. Mikolaichuk SP - 1st mechanic THAT. Schreiber II - Fitter MOT. Slesarenko EA - Fitter MOT. Gubarev AV - Driver RMU - ALIVE Vasil'chenko AV - Sailor 2 Cl. Bezus AA - Sailor 2 Cl. Nuts VV - Sailor 2 Cl - ALIVE Vorobyov OS - Sailor 2 Cl. Nyrkov MV - Sailor 2 Cl - ALIVE Aliyev YS - Sailor 2 Cl - ALIVE Triboi IP - Sailor 2 Cl - ALIVE Shvarov FG - Sailor 2 Cl. Bondaryuk MV - Sailor 2 Cl - ALIVE Selmeystruk NS - Sailor - ALIVE Kon'kov MA - Sailor - ALIVE Lutsuk EA - Sailor - ALIVE AS Dorovskih - Sailor. Booth AS - Sailor - ALIVE Magometov DR - Sailor - ALIVE Vasiltsev DN - Sailor. Chihiro YI - Sailor. Surtaeva NN - Sailor. Timofeev ON - Sailor. Ovchinnikov NP - Sailor - ALIVE breast ETC. - Cook 1 cat. Weber NG - Cook 2 cat. Tatarinov YI - 3 Chef Cat. Polishchuk IA - Sailor porter - ALIVE Lazarev AV - Barmaid - ALIVE Kharchenko VV - Orderly. Dobrovol'skaya IV - Laundress - ALIVE Vitrikus - ALIVE
List of surviving citizens of countries other than Russia:
Gnilenko D. - ALIVE
M-S Pen (Indonesia) - ALIVE
Vtirkov ME - ALIVE
Young Ro - ALIVE
Moscow Chemical University (Myanmar) - ALIVE
Wu NT (Vanuatu) - ALIVE
Hyang (Myanmar) - ALIVE
Tan - ALIVE
Kudenko N. - ALIVE
Kaguza FS - ALIVE
Belevtsev DV - ALIVE
Isi (Vanuatu) - ALIVE
Carl - ALIVE
Kua (Myanmar) - ALIVE
Seth Ra-Ha (Myanmar) - ALIVE
Htet Ko (Myanmar) - ALIVE
Tin- Tu (Myanmar) - ALIVE
Ming Thane (Myanmar) - ALIVE
Yar Zaf (Myanmar) - ALIVE
Kua- Kuatun (Myanmar) - ALIVE
Kua- Young (Myanmar) - ALIVE
Kuayer Yo (Myanmar) - ALIVE
Silvistruk MS . - ALIVE
Uint- LLP (Vanuatu) - ALIVE