NGA Nautical Chart 921: Plotting Chart 921 Admiralty Routeing Charts For North Pacific If you’re a long-time outdoorsman

If you’re a long-time outdoorsman (or woman) in this area

The IMO Manual on Oil Pollution is an essential resource for governments

2 Helicopter Ditching

This trident symbol is from Barbados' colonial badge

British Admiralty Nautical Chart 1157: Pasaia (Pasajes) and Approaches

NGA Nautical Chart 921: Plotting Chart 921 Admiralty Routeing Charts For North Pacific If you’re a long-time outdoorsmanNGA Plotting Chart 921 is for use between lattitudes of 3 to 11 (North or South). The chart is 35 inches by 46 inches, and the center lattitude is 7, where a scale of 1: 1,087,566 makes every 4 inches on the chart equal to one second of longitude.