Name	Lifeboat from Titanic	Lifeboat to Carpathia	Confidence Level
Senior, Mr Henry	Collapsible B	12	5.00 3.43

New York Times, April 19, 1912:
“I swam around for about half an hour, and was swimming on my back when the Titanic went down. I tried to get aboard a boat, but some chap hit me over the head with an oar. There were too many in her. I got around to the other side of the boat and climbed in. There were thirty-five of us on board, including the second officer, and no women. I saw any amount of drowning and dead around us. We picked one man off an overturned boat and he died just as he was pulled over the side. Later the second officer signaled to some other boats and some of us were transferred to them.”

Aberdeen (Scotland?) Daily Journal, April 29, 1912:
“I helped to load two or three lifeboats, and then looked around. There were no more to load, at any rate on the starboard side. We got up to the hurricane deck to lower some of the collapsible boats but there was no tackle or anything to lower them by. We had to throw them down to the boat deck, and run the risk of their breaking. The ship was pretty near sinking then, and the captain shouted “Each man for himself”. I had noticed him on the bridge before that. He was pacing up and down, firing up rockets and giving orders. …. When the order came, I dived over the side, leaving a boat, which I had been helping to lower. The boat floated off, overturned, and after a time, I got on her. There were 35 of us on the keel of that boat. The second officer, Mr. Lightoller, was there, and the assistant wireless man, Bride. We were all there when we were picked up. The second officer whistled to attract the attention of the rowing boats, and we were divided among the boats when there was room for us.”

Discussions were brief as it is very clear from his various accounts he was on collapsible B with Lightoller. The mention of the person who died is believed to be David Livshin whose body was taken aboard boat 12. Likely that Senior was too, but he doesn’t clarify which lifeboat rescued him.  We suspect, but could not prove, that he was transferred to #12.  If he didn't transfer to #12, then he had to transfer to #4.