Nautical Flag Translator
- Translate your initials into nautical signal flags.
- http://www.wingood.com/flagselect.asp

International Signal Flags
- Graphic word-to-signal converter.
- http://www.sartori.com/nhc/flags/

Maritime Signal Flags
- Offers quiz of random phrases with English translations.
- http://www.sideslip.org/flags/

Code of Signals
- International nautical/marine signal flags geographic.org.
- http://www.geographic.org/flags/code_of_signals_flags.html