The following is the answer I found for you, please refer to it:
What documents do I need to apply for fishing at sea?
Documents required by offshore fishermen: just apply for boat people's card.
Legal basis:
1. the State Council municipality's decision to establish administrative license for administrative examination and approval items that really need to be preserved (the State Council Decree No.412)
2. Regulations on the administration of frontier security of coastal ships
Article 7 Before going to sea, persons who have reached the age of 16 and do not hold the People's Republic of China (PRC) Crew Certificate or the Crew Service Book shall apply to the frontier defense department of public security for a crew certificate.
Handling materials:
Original or photocopy of application for "boat people card"
1, apply for the registration form of "Sailor's Certificate"
2. The original "Household Register of Maritime Ships"
3. The original ID card (returned after examination) and a copy of the ID card of the person handling the boat people's sea permit.
4. One-inch photo of the person handling the boat people's sea permit.
5, the floating population residence registration information form paper materials
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