Okay folks, before we go wandering off on incomplete information (excepting Mintypilot who also read the links)- - This was NOT a cruising boat and the people were NOT cruisers. This was an incident involving a professional treasure hunter
and those ashore who wanted some of the treasure that was reputedly stored/kept on the boat. From TaoJones link to Lat38:
"After researching the matter, reporter Don Winner of the widely read and well-respected online magazine Panama Guide is convinced that this was not a random attack. Rather, he believes that Kjaer-Olsen — who is a longtime treasure diver — and his family were singled out because a large quantity of 17th century gold was believed to have been aboard their 70-ft S&S schooner Antares.
From the link to the Panama-Guide: "Bo Kjaer-Olsen was a famous salvage diver and treasure hunter who probably had about $200,000 dollars worth of 17th Century Spanish gold on his boat, enough to lure the five men who attacked his family and killed him."
- - I think there are few if any "cruisers" wandering around with $200K in gold onboard their boats. . . especially those in the "cruising on $500/month thread and for them some of the summary from the Panama-Guide article is appropriate: "If you ever happen to find yourself in possession of $200,000 dollars worth of Spanish gold from a sunken treasure - put it in a safe deposit box in a bank somewhere."