A Reuters story says piracy is increasing off Africa and Indonesia. And what do
ships use to call for help? Probably HF. But what freqs? When I worked in
Buenos Aires a few years back, I was told that freighters sailing near the
Brazil coast would lock down the ship, and weld some doors shut as they passed
because pirates would try to board. If they couldn't get into the living and
cargo areas, eventually they'd get off, not wanting to show up still on board
in a major harbor.


http://www.alertnet.org/thenews/newsdesk/L23337057.htm