Editing Apollo 12 (section)

=== Spacecraft ===
[[File:Apollo 12 command and service modules hoisted above test stand.jpg|thumb|upright|The Apollo 12 CSM on a test stand, June 30, 1969]]

The Apollo 12 spacecraft consisted of Command Module 108 and Service Module 108 (together Command and Service Modules 108, or CSM–108), Lunar Module 6 (LM–6), a Launch Escape System (LES), and Spacecraft-Lunar Module Adapter 15 (SLA–15). The LES contained three rocket motors to propel the CM to safety in the event of an abort shortly after launch, while the SLA housed the LM and provided a structural connection between the Saturn V and the LM.{{sfn|Orloff & Harland 2006|p=330}}{{sfn|Press Kit|p=53}} The SLA was identical to Apollo 11's, while the LES differed only in the installation of a more reliable motor igniter.{{sfn|Mission Report|p=A–1}}

The CSM was given the [[call sign]] ''Yankee Clipper'', while the LM had the call sign ''Intrepid''.{{sfn|Orloff & Harland 2006|p=328}} These sea-related names were selected by the all-Navy crew from several thousand proposed names submitted by employees of the prime contractors of the respective modules.<ref>{{cite news|newspaper=[[The New York Times]]|date=November 15, 1969|url=https://timesmachine.nytimes.com/timesmachine/1969/11/15/79436944.html?pageNumber=24|title=Apollo spaceships have name with salty ring|url-access=subscription}}</ref> George Glacken, a flight test engineer at [[North American Aviation]], builder of the CSM, proposed ''Yankee Clipper'' as such ships had "majestically sailed the high seas with pride and prestige for a new America". ''Intrepid'' was from a suggestion by Robert Lambert, a planner at [[Grumman]], builder of the LM, as evocative of "this nation's resolute determination for continued exploration of space, stressing our astronauts' fortitude and endurance of hardship".{{sfn|Harland 2011|p=12}}

The differences between the CSM and LM of Apollo 11, and those of Apollo 12, were few and minor.{{sfn|Mission Report|p=A–1}} A hydrogen separator was added to the CSM to stop the gas from entering the potable water tank—Apollo 11 had had one, though mounted on the water dispenser in the CM's cabin.{{sfn|Press Kit|p=57}} Gaseous hydrogen in the water had given the Apollo 11 crew severe flatulence.{{sfn|Harland 2011|p=150}} Other changes included the strengthening of the recovery loop attached following splashdown, meaning that the swimmers recovering the CM would not have to attach an auxiliary loop.{{sfn|Press Kit|p=57}} LM changes included a structural modification so that scientific experiment packages could be carried for deployment on the lunar surface.{{sfn|Press Kit|p=63}} Two hammocks were added for greater comfort of the astronauts while resting on the Moon, and [[Apollo TV camera|a color television camera]] substituted for the black and white one used on the lunar surface during Apollo 11.{{sfn|Mission Report|p=A–2}}