Is This Trip Really Necessary????
The Gulf Stream is about 40 miles wide and it moves from east to west up the US coast to Europe as a result of the difference in heating and cooling on the surface of the earth. The Gulf Stream velocity varies from 5 knots in the center to less than one knot on the outer edges. The stream’s speed will also increase with a strong south wind.When crossing the stream you must allow for the drift to the north by steering your boat further south. Assume the average speed of the stream is about 2.5 kt. If you have a "Stink Pot" and it can cruise at 50 kts per hour from Port Everglades to Bimini, then the trip would be about 47.4 NM and you would plot a course of about two and one half miles south of your destination. A Hunter 18.5 has a theoretical hull speed of:Hull Speed = (1.34) * (15.5)^0.5=5.28knotsIt could theoretically take you about nine hours of sailing with a theoretical northern drift of about 22 NM, assuming you could sail at your hull speed for the entire open ocean voyage and the Gulf Stream's northern drift was a constant 2.5 kt and did not vary. You would have to plot a course of about twenty-two and half miles south of your destination if you use your compass and charts. You could use your hand held GPS for navigation, but what if it fails? How much drift? What's the boat speed? What was my last known position? How far am I from land?Your hand held VHF is line of sight only, are you going to hope some other vessel will hear your message and send it on to the Coast Guard?Open ocean crossing can be done by small sailing vessels, it has been done before. One of the cardinal rules in ocean crossing is weather. A small sailing vessel must wait for the perfect weather window of opportunity before he can attempt to do an ocean crossing. Do you have enough time to wait for the perfect weather window? How about when you reach the Bahama, do you have enough spare time to wait for a weather window to open up for your return trip?Your theoretical hull speed is just slightly faster then the Gulf Stream's maximum speed! You could be out on the ocean sailing, but with ZERO ground speed! Doing an open ocean crossing in a small craft can be done, you have to be really good, the weather has to be perfect, and you have to have been born under a lucky star. Are you that good? Do you feel lucky?If you are going to sail in Florida, sail the ICW. There are beautiful beaches and state parks where a Hunter 18.5 can anchor away from most other boats. Recreational sailing should be fun and not a life or death adventure.You ask for advice, that my advice.Fair Winds.Clyde