Four men were rescued after their boat sank north of the Dominican Republic and taken to Jacksonville, the Coast guard said in a release.

Once the boaters were located from the distress call, Coast Guard aircraft directed the 720-foot, U.S.-flagged Coquí and a nearby fishing vessel, the Bonanza, accompanied with smaller fishing vessels, ...

we remain cautiously optimistic that they are not related to any persons or any vessel in any distress or any kind of trouble." ...

But what distress signal would be universally understood? Before the 1906 agreement, various countries and organizations each decided their own signals for shipping. One of the most widely adopted was ...