Sea time requirement for License renewal

-I believe the sea time requirement for Master AGT License renewal is 360 days in 5 yrs, can anyone find the regulation or confirm this.

-If you don’t have sufficient sea time what modules require re-taking if any?

-Is there an exemption on the sea time requirements if you are shore based in a Maritime related job?

Thanks!

It’s September, but is this an April Fools gag?