Jamnagar was a 576 GRT coaster which was built in 1924 for Maharaja Jam Sahib of Nawanagar.

In 1944, she was sold into merchant service before being requisitioned by the Ministry of War Transport (MoWT) and renamed Empire Bulbul.

The name Hellenic Bee had been allocated but she ran aground and sank before the proposed name change could be implemented.

[3] In 1940, Jamnagar was requisitioned by the Royal Indian Navy for use as an auxiliary patrol vessel.

[1] She was operated under the management of the British Indian Steam Navigation Co Ltd.[3] The name Hellenic Bee had been allocated,[1] but on 29 August 1948 she ran aground on Domanik Island, Bay of Bengal (21°53′N 90°48′E / 21.883°N 90.800°E / 21.883; 90.800), and then sank.