After coming back from a very brief evening sail last night (no wind at all), I noticed that a couple of guys were at the dock working on an Oday 22 they had just bought. The guys asked me "we can make it to Block Island in one day if we leave early, right?" I explained that Block Island is about 70 miles by boat from Branford, that their boat would be very fortunate to average 5 knots, which means that theoretically, it could be about a 14 hour sail. When I explained to them that there was no way that they should depend on making that speed (tacking, wind strength, tides), and that they should plan on making it at least a two or three day trip, they were more than surprised. "What about the engine, Dude (they were in college), can't we just use that?" They did have a new outboard, but when I pointed out that it only had a three gallon tank (they didn't know), they asked if I thought they should get a bigger tank. I also had to show them how to tighten the shrouds and stays, set up their main and jibsheets and how to hank on the jib. One of them said he had sailing experience, but on "big boats, this one seems dinky to me". How about Newport, they asked, is that closer? In short, they had no idea where they were going, what they were in for (I mentioned 5 foot seas and they just looked at each other and laughed) or it seemed, how to sail. They said they had to leave the next day as the marina had only launched the boat for them, not rented them a slip or mooring. I did try and convince them to take more time and plan their voyage better, and seemed to convince them that they needed at least a chart, water, and food (they did have a VHF). I then wished them good luck and went home.As I related this story to the Admiral at home, I thought of a zillion other things that I could have told them. Naturally, I began to feel that I should have done more to help or try and stop them from putting themselves into unreasonable danger. What would you have done?