An Indonesian Navy ship hospital is moored in Surabaya, East Java, on Feb 20, 2020. (JUNI KRISWANTO / AFP)

JAKARTA - An Indonesian naval ship named KRI Teluk Jakarta-541 carrying out logistical duties sank to a depth of about 90 meters in East Java province's Masalembo waters on Tuesday at about 8:30 am.

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The Indonesian Navy said that the ship sank due to several leaks at thru-hulls of the vessel in a statement on Wednesday.

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"The sea waves (around) the location were between 2.5 and 4 meters high at the time," the statement read.

No casualties were reported in the accident. All the 55 crewmen have been rescued by two civilian ships nearby.