What evidence is there that these are fishermen, who apparently need speedboats for some reason? These must be some fast-moving fish!
You've also got the Dominican Republic recovering massive hauls of cocaine from these 'fishermen', again, in speedboats, not fishing vessels. [2]
[1] https://features.csis.org/tracking-transatlantic-drug-flows-...
[2] https://www.pbs.org/newshour/world/dominican-republic-says-i...