Portugal to French Guiana means following the North Atlantic Gyre - The Canary Current then the North Equatorial Current. https://en.wikipedia.org/wiki/North_A

Portugal to French Guiana means following the North Atlantic Gyre - The Canary Current then the North Equatorial Current. https://en.wikipedia.org/wiki/North_Atlantic_Gyre https://en.wikipedia.org/wiki/North_Atlantic_Gyre Looking at the current maps, I think most of the paddling will be southward, to get down to South America rather than the Caribbean. For example, Thor Heyerdahl's Ra II, a square-sailed reed boat, went from Morocco to Barbados - https://en.wikipedia.org/wiki/Thor_Heyerdahl#Boats_Ra_and_Ra_II https://en.wikipedia.org/wiki/Thor_Heyerdahl#Boats_Ra_and_Ra... . The people I've heard of who have rowed across the Atlantic generally do Canary Islands to the Caribbean. There's even "The World's Toughest Row" for that route - https://www.worldstoughestrow.com/ https://www.worldstoughestrow.com/ .