Who is the liar?

Crank up your brains. Take a rest by taking this brain test after our English coursefor Adults in Singapore.

Guess who is the liar?

A Japanese ship was en route in the open sea. The Japanese captain went for a shower removing his diamond ring and Rolex watch on the table. When he returned, his valuables were missing.

The Captain immediately called five suspected crew members and asked each one where and what he was doing for the last 15 minutes.

The Phillipino cook (in a heavy overcoat) : I was in fridge room getting meat for cooking.

The Indian Engineer (with a torch in hand) I was working on generator engine.

The Srilankan seaman: I was on the mast correcting the flag which was upside down by mistake.

The British Radio officer: I was messaging to company that we are reaching. Next port is 72hrs from now that is wednesday morning at 1000hrs.

The British na vigation
officer: I am on night watch, so i was sleeping in my cabin.

The captain caught the liar.
So who is the thief and why ?