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HM Nautical Almanac Office is a small multi-disciplinary group of specialists whose purpose is to provide solutions to astronomical and celestial navigation problems. HMNAO is part of the UK Hydrographic Office .

• Updated: 9 February 2023

Vessel traffic management, electronic nautical publications and safety information for owners, operators of ships, yachts, fishing vessels.

• Updated: 3 April 2024

FCDO travel advice for Brazil. Includes safety and security, insurance, entry requirements and legal differences.

• Updated: 10 December 2025

• Warnings and insurance

  Your travel insurance could be invalidated if you travel against advice…

• Entry requirements

  This information is for people travelling on a full ‘British citizen’…

• Safety and security

  This guide also has safety advice for regions of Brazil. Terrorism There…

• Regional risks

  This section has safety advice for regions of Brazil. It only covers…

• Health

  Before you travel check that: your destination can provide the healthcare…

• Getting help

  The Foreign, Commonwealth & Development Office (FCDO) cannot provide…

Equivalency letters for electronic charts and publications meeting regulation requirements for use on ship's bridge.

• Updated: 22 September 2023

Advice and guidance on the health needs of migrant patients from Ecuador for healthcare practitioners.

• Updated: 7 September 2021

FCDO travel advice for Madagascar. Includes safety and security, insurance, entry requirements and legal differences.

• Updated: 26 January 2026

How to find MCA approved training providers for long courses.

• Updated: 30 January 2026

• Updated: 30 January 2026

Advice and guidance on the health needs of migrant patients from Dominica for healthcare practitioners.

• Updated: 7 September 2021

FCDO travel advice for Mozambique. Includes safety and security, insurance, entry requirements and legal differences.

• Updated: 26 February 2026