Nahkoda harus selalu mengusahakan agar surat-surat kapal tetap berlaku. Jika oleh sesuatu sebab yang tidak dapat dihindarkan surat tersebut akan habis masa berlakunya. Nahkoda harus menyimpan baik-baik dan melindungi surat-surat kapal tersebut dalam segala keadaan.
Surat-surat kapal yang sudah tidak berlaku lagi dan sudah diganti dikirim ke divisi armada.
Macam-Macam Surat Kapal
Surat-surat yang harus disimpan di kapal :
1. Certificate of Nationality
2. Tonnage Certificate
3. Certificate of Seaworthiness
4. International Loadline Certificate
5. Cargo Ship Safety Construction Certificate
6. Cargo Ship Sfety Equipment Certificate
7. Safety Radiotelegraph Certificate
8. Radio Certificate of Approval
9. Radiostation Lisence
10. Derrattization/Exemption Certificate
11. Boiler�s Certificate of Approval
12. Classification Certificate for hull
13. Classification Certificate for Machinery and Boilers
14. Annual Certificate for hull
15. Annual Certificate for Machinery and Boilers
16. Cargogear Certificate
17. Certificate for Navigation Lights
18. Certificate for Inflatable Liferaft
Lain2
1. Musterbook
2. Punishment book
3. Lightdues Bill
4. Custom�s Clearance
5. Latest Sailing permit
6. Healtbook