Considering the circumstances at and after about 02:10am, it would be quite difficult to know the precise time that Collapsibles B and A reached the boat deck. A significant factor was the substantial
port list at the time, which meant that the physical tasks and effort required to get those boats on to the boat deck were very different on the two sides.
A clue might be to look at the times when the previous lifeboats on each side were launched. On the starboard side,
Collapsible C started to lower under Murdoch's supervision just before 2am and by then the chances are that some crewmen were already unfastening
Collapsible A, which was lashed on top of the Captain's Quarters. Once freed, the lifeboat had to be moved
uphill against the port list to the edge of the Captain's Quarters.
Moody had reportedly requested some block and tackle equipment to facilitate this task and Hemming fetched it; it is uncertain if it was used at all. Steward Edward Brown, who helped with and was one of the survivors on
Collapsible A, said that they rigged up a couple of canvas spars to support the lifeboat when it had to be pushed over on to the boat deck.
On the port side,
Lightoller and Wilde lowered
Collapsible D at 02:05am and then the former got on to the roof of the Officers' Quarters to lead unlashing of
Collapsible B. Although they started this work a bit later than Murdoch's team on the starboard side, it was easier for
Lightoller's men because here the port list was helping them - in theory at least. Lightoller later said that from his vantage point he could see the struggles that Murdoch's group were having on the starboard side.
Reconstructions vary in the time and manner in which the two lifeboats were pushed down from the roof; I think we can only speculate that it must have been
sometime between 02:10am and
02:12am.
Collapsible B very likely was pushed over first, but because of the port list it
fell rather than slid and ended-up upside down on the partially flooded boat deck of the lower port side. Harold Bride had just arrived on the scene and claimed to have been momentarily trapped under the capsized lifeboat. Collapsible A followed on the higher starboard side but despite the spars used as support, the boat was damaged in the fall when it landed on the still dry boat deck; though it remained upright, the collapsed canvas sides appeared to have partly jammed and could not be raised properly.