Name	Lifeboat from Titanic	Lifeboat to Carpathia	Confidence Level
Boxhall, Mr Joseph Groves	2	2	5.00

American Inquiry
Testimony of Joseph Boxhall, page 240
   Senator SMITH. Could you tell the order in which they were lowered, whether this was the second or third or fourth?
    Mr. BOXHALL. When I was lowered away I was the last boat but one on the port side. There was one of the lifeboats lowered away after I left, a few minutes after I left, and then there were no more boats hanging in the davits on the port side.

The 'second but one' would be #2, as Collapsible D was lowered after it.

British Inquiry
Testimony of Joseph Boxhall
  15423. What boat was it you were sent away in? - In the emergency boat No. 2.