Unknown Japanese Pin--Help Needed

[RonR]

Here is a small Japanese pin that was among a group of WW2 insignia that I recently acquired.

Since I am primarily a TR collector, I have no idea what it is and really could use your help in identifying it.

Any and all help will be greatly appreciated.

Front view:

[RonR]

Reverse:

[Bob Chatt]

This is the badge for the Imperial Seamen Relief Association Member's badge.

[RonR]

dchatt,

Thank you for this super information!

Best regards,