Horror as police discover two lifeless our bodies on a ship in Sydney Harbour

The bodies of a man and a woman have been found on a boat moored on Sydney Harbour overnight.

Emergency services were called to a mooring at Tunks Park last night due to concerns for the welfare of two people believed to be on the 47ft yacht.

When police arrived, they found the bodies of a man and a woman, believed to be aged in their 50s or 60s.

Specialist assistance was sought from Fire and Rescue NSW due to concerns about fumes detected on board.

Police have been told the two people were spending Monday night on the boat, with concerns raised when they didn’t return.

Detectives have established a crime scene and begun inquiries.

A number of items have been identified at the scene and will be taken for forensic examination.

A post-mortem examination will be conducted in the coming days to confirm the identity of the man and woman and to determine the cause of death.

Anyone with information about the incident is urged to contact Crime Stoppers on 1800 333 000.

Emergency services were called to a mooring at Tunks Park last night due to concerns for the welfare of two people believed to be on the 47ft yacht (pictured emergency services at the scene)

When police arrived, they found the bodies of a man and a woman, believed to be aged in their 50s or 60s (pictured water police at the scene)