When I was 19, I went on a three-day sailing trip with a friend, my girlfriend's dad, and his friend who owned the boat (Jerry). It was a little small for four, so quarters were tight. We were kind of close sitting to each other, so I could not help seeing everyone's basket. Jerry seemed to have a nice bulge. I saw him checking me out a few times, too. Jerry was not wanting us to use the head too much as it was sized for two people. We would pee over the side, and I thought I caught a glimpse of Jerry's nice cock. On the second day, it was hot, and we were on deck in our swim trunks. I Jerry said he was going to strip because no one was around to see us. He sat down across from me with only the second uncut cock I had ever seen. He was not overly long, but very thick. He either did not have much foreskin, or sorted a semi all the time. He had a large set of nuts as well. He was also trimmed close, something I had never seen up to then. My girlfriend's dad stripped, and I got to see him naked for the first time - a "regular" guy with a cut average cock. My friend said he was not going to strip. I followed suit (or out of suit) and stripped. I thought I heard Jerry go "hmmm". I think I spent the next few hours just staring at his cock. He would stand up every once in a while to adjust sails or get a drink, allowing everything to hang nicely. I think he noticed once and winked at me. That night we slept on a small island. My girlfriend's father said he wanted to trade tents and someone else sleep with Jerry because he snored so bad. My friend said no way, but I said ok because I sleep through anything. To my delight, he stripped naked to get into his sleeping bag. It was dusky, so I could see him get in and I'm sure I boned up. He laid there a minute then said he was hot and threw the cover off. He dozed off rather quickly, but I was all horny. He started snoring right away, so I thought he might be asleep already. I threw off my covers, too, because I was getting hot, too. I was jacking off quietly seeing his lovely cock, when he started getting hard. I thought it was me being noisy, so I quickly laid down. He did not awaken but got what I guess was fully erect. His balls tightened up, and his foreskin was completely gone. I guessed him to be about eight inches hard. I resumed jacking and shot a great load all over my sleeping bag. I fell asleep right away. I awoke in the middle of the night to him coming back into the tent from a "nature call". I could see his form and cock in the moonlight. I pretended to be asleep. I watched him lay down, then I saw him rubbing himself. It was too dark to see any detail, but I could hear him moving. I heard him let out a light moan, then sigh and roll over. I waited until I heard him snoring, then jerked one off again. The next morning he asked if I slept okay, because he thought I was restless. I said I slept great, and he said he did too. The others said that settled it, and we had to bunk together the rest of the trip. I would love to say there was a lot more, but I was honestly too exhausted the next two nights to stay awake and see if anything else happened. At least I was able to cement his image in my mind from all the nudity that trip.