San Francisco Maritime NHP Nautical Flag Decoder
Now you can write and decode messages with the San Francisco Maritime National Historical Park Nautical Flag Alphabet Decoder! Signal flags are raised by ships at sea to communicate using an international code. Each flag symbolizes a specific message and a letter of the alphabet. Together these flags can spell out short messages. The flags are part of the International Code of Signals, which has been in continuous use since 1857.
- Size: 3” round