Sex of rat identification

Long time follower, first time poster. Can anyone tell me the sex of this rat? Not the greatest photo but I believe it’s a ship rat and a male?

Rats have a penis bone, known as a bacculum. Wearing gloves, have a feel around.
Judging by the length of the tail, it’s probably a ship rat.

Hold it close to your ear and give it a shake, if it rattles then that is the male.