Issuance of IMO Technical Service Circular No. 02/2026 on Safeguarding Flag State Integrity
The Guinea-Bissau International Ships Registry (G-B ISR) has issued Technical Service Circular No. 02/2026 (15 April 2026) titled “Safeguarding Flag...
GB ISR – Easter Holiday Notice
On the occasion of the upcoming Orthodox Easter, the Guinea-Bissau International Ships Registry (G-B ISR) extends its warmest wishes to all our clien...
Marine Notice 01/2026, 05-03-2026: Subject: “Heightened Maritime Security Risk – Strait of Hormuz, Arabian Gulf, Gulf of Oman and Adjacent Sea Areas”
The Guinea-Bissau International Ships Registry (GB ISR) announces the issuance of Marine Notice No. 01/2026, addressing the Heightened Maritime Secur...
Office Closure – Clean Monday (23 February 2026)
We would like to inform you that the offices of the Guinea-Bissau International Ships Registry (G-B ISR) will remain closed on Monday, 23 February 20...
INFO BULLETIN 02/2026: GB ISR Awards Recognized Organization (RO) Authorization to Isthmus Bureau of Shipping (IBS)
The International Ships Registry of Guinea-Bissau (G-B ISR) is pleased to announce the formal conclusion of the Agreement Governing the Delegation of...
INFO BULLETIN Nr.01/2026, 12/01/2026 Subject: New Year’s Statement of the General Ships Registrar Guinea-Bissau International Ships Registry
The Guinea-Bissau International Ships Registry (GB ISR) enters the New Year marking the successful completion of its fourth year of operations, with...
Marine Circular Nr. 01/2026, 15/01/2026Subject: “Revision of the Declaration of Maritime Labour Compliance (DMLC) – Part I – Introductionof Revised DMLC Part I (Rev. 02) and Validity Period”
We are pleased to announce that the International Ships Registry of Guinea-Bissau (GB ISR) has issued Marine Circular No. 01/2026, introducing the re...