"Lusitania" did not carry enough lifeboats for all her passengers, officers and crew on board at the time of her maiden voyage (carrying four lifeboats fewer than "Titanic" would carry in 1912). This was a common practice for large passenger ships at the time, since the belief was that in busy shipping lanes help would always be nearby and the few boats available would be adequate to ferry all aboard to rescue ships before a sinking. After the "Titanic" sank, "Lusitania" and "Mauretania" were equipped with an additional six clinker-built wooden boats under davits, making for a total of 22 boats rigged in davits. The rest of their lifeboat accommodations were supplemented with 26 collapsible lifeboats, 18 stored directly beneath the regular lifeboats and eight on the after deck. The collapsibles were built with hollow wooden bottoms and canvas sides, and needed assembly in the event they had to be used.