NAVIGATIONAL WARNINGS · FOR OFFICERS OF THE WATCH AND MASTERS
NAVAREA IV (4) warnings
NAVAREA IV (4) is one of the 21 sea areas of the World-Wide Navigational Warning Service, coordinated by the United States (NGA). Its waters reach the ports of Canada, the United States, Venezuela, Mexico and Cuba and 34 more countries. NaviBoss draws its in-force warnings on the chart, refreshed every few hours.
Countries with ports in NAVAREA IV
Each country opens its port guides. Ports on two coasts can sit in two areas.
| Country | Ports in this area | Other NAVAREAs |
|---|---|---|
| Canada | 96 | also NAVAREA XII, NAVAREA XVIII |
| United States | 80 | also NAVAREA XII, NAVAREA XVII |
| Venezuela | 25 | — |
| Mexico | 15 | also NAVAREA XII |
| Cuba | 13 | — |
| Dominican Republic | 12 | — |
| Panama | 12 | also NAVAREA XII |
| Jamaica | 10 | — |
| Colombia | 9 | also NAVAREA XII |
| Greenland | 9 | also NAVAREA XVIII |
| Haiti | 9 | — |
| Puerto Rico | 9 | — |
| Trinidad and Tobago | 9 | — |
| Bahamas | 7 | — |
| Suriname | 5 | — |
| U.S. Virgin Islands | 5 | — |
| Curaçao | 4 | — |
| Honduras | 4 | — |
| Guadeloupe | 3 | — |
| Belize | 2 | — |
| Bonaire, Sint Eustatius and Saba | 2 | — |
| Costa Rica | 2 | also NAVAREA XII |
| French Guiana | 2 | — |
| Guatemala | 2 | also NAVAREA XII |
| Guyana | 2 | — |
| Nicaragua | 2 | also NAVAREA XII |
| Saint Kitts and Nevis | 2 | — |
| Saint Lucia | 2 | — |
| Saint Pierre and Miquelon | 2 | — |
| Turks and Caicos Islands | 2 | — |
| Barbados | 1 | — |
| British Virgin Islands | 1 | — |
| Cayman Islands | 1 | — |
| Dominica | 1 | — |
| Grenada | 1 | — |
| Martinique | 1 | — |
| Montserrat | 1 | — |
| Saint Vincent and Grenadines | 1 | — |
| Sint Maarten | 1 | — |
Voyages through NAVAREA IV
- Shanghai to New YorkNAVAREAs XI → XIII → XII → IV
- Singapore to New YorkNAVAREAs XI → VIII → IX → III → II → IV
- Shanghai to HoustonNAVAREAs XI → XIII → XII → IV
- Cebu to HoustonNAVAREAs XI → XII → IV
- Rotterdam to New YorkNAVAREAs I → IV
- Rotterdam to HoustonNAVAREAs I → IV
- Rotterdam to New OrleansNAVAREAs I → IV
- Genoa to New YorkNAVAREAs III → II → IV
Canals and straits in this area
Questions about NAVAREA IV
Who coordinates NAVAREA IV (4)?
NAVAREA IV is coordinated by the United States (NGA). The coordinator collects the navigational warnings for the area and broadcasts them by satellite at scheduled times, at least twice a day.
Which countries are in NAVAREA IV?
Countries with ports in NAVAREA IV include Canada, the United States, Venezuela, Mexico, Cuba, the Dominican Republic, Panama and Jamaica, 31 more in the list on this page.
Where can I see the NAVAREA IV warnings in force?
The official in-force list is published by the coordinator, the United States (NGA), and broadcast by SafetyNET. NaviBoss draws the in-force warnings on the chart, refreshed every few hours, and lists those near your planned route. Always keep the official list on board.
Which voyages pass through NAVAREA IV?
For example Shanghai to New York, Singapore to New York, Shanghai to Houston and Cebu to Houston. A ship keeps the warnings of every NAVAREA it passes through.
The other NAVAREAs
- NAVAREA I (1)United Kingdom
- NAVAREA II (2)France
- NAVAREA III (3)Spain
- NAVAREA V (5)Brazil
- NAVAREA VI (6)Argentina
- NAVAREA VII (7)South Africa
- NAVAREA VIII (8)India
- NAVAREA IX (9)Pakistan
- NAVAREA X (10)Australia
- NAVAREA XI (11)Japan
- NAVAREA XII (12)United States
- NAVAREA XIII (13)Russian Federation
- NAVAREA XIV (14)New Zealand
- NAVAREA XV (15)Chile
- NAVAREA XVI (16)Peru
- NAVAREA XVII (17)Canada
- NAVAREA XVIII (18)Canada
- NAVAREA XIX (19)Norway
- NAVAREA XX (20)Russian Federation
- NAVAREA XXI (21)Russian Federation
NAVAREA IV warnings on your route
Open the Warnings tool to see the in-force warnings on the chart, the ones near your planned route first, and export them to your ECDIS as a user chart. Free with an account.
Open the Warnings tool →About our guides
NaviBoss guides are written and checked by maritime industry experts, masters and deck officers. Each one is built from the same data the planner uses, dated, and rebuilt when that data changes. Spotted something wrong? Tell us on the feedback board.
A planning aid, not for navigation. The official in-force list from the NAVAREA coordinator, your NAVTEX and SafetyNET receivers and the latest Notices to Mariners always come first.