{"group":"port","pic":"living/pics/ships-city.webp","question":"What happens to a ship once it lands?","answer":"It is unloaded by lift and crane, filled with fuel made on Mars and flown home. Or it stays for good, and its steel and parts become part of the city.","play":{"label":"Ride the lift at First Landing","href":"play/?at=-30,-35,0.6,0.22,22&era=city&light=day"},"tower":{"title":"A tower that cannot move","line":"The ship, a stack of storeys and you, all drawn to the same scale.","storeys":"{sh_storeys} storeys","you":"You","door":"Door {sh_door} m up","ride":"Ride the lift down","text":"A ship stands {sh_storeys} storeys tall and cannot move itself. Its cargo door is {sh_door} m up, so everything comes down by lift or crane.","count":"{m} m to go","down":"Boots on the gravel."},"steps_title":"Unloading day","steps":[{"icon":"lift","title":"The crew lift","text":"An open basket rides cables from the cargo door down to the gravel, two people at a time."},{"icon":"crane","title":"The folding crane","text":"A jointed arm swings out of the door and lowers the heavy crates: reactors, rovers, machines."},{"icon":"hauler","title":"The hauler","text":"Eight wheels and a flat deck carry each load to town, {sh_lift_lo} to {sh_lift_hi} t off the crane at a time."},{"icon":"fuel","title":"Filling for home","text":"A hose from the buried pipeline fills the ship with fuel made on Mars, ready for the trip home."}],"inside":{"title":"Inside the ship","line":"The ship cut open to scale: cargo space, cargo door, fuel tanks, engines and legs.","bay":"Cargo space","methane":"Methane","oxygen":"Liquid oxygen","engines":"Six engines","legs":"Six legs","scale":"Drawn to scale"},"empty":{"title":"Emptying a ship","sub":"One square for every tonne of cargo.","day":"Day {n}","fast":{"name":"A fast day: big loads"},"slow":{"name":"A slow day: small loads"},"line":"A ship brings about {sh_cargo} t. On a good day the crane and lift bring it all down in {sh_days_lo} days; with small, fiddly loads it takes about {sh_days_hi}."},"earth_mars":{"earth":{"head":"Rockets ride to the pad"},"mars":{"head":"Ships stand where they land"},"pics":{"earth":"living/pics/em-ships-earth.webp","mars":"living/pics/em-ships-mars.webp"},"rows":[{"label":"Moving a rocket","icon":"car","earth":"NASA's crawler carries a whole rocket to its pad at about {sh_ct_mph} mile an hour.","mars":"A landed ship stands right where it touches down until it flies home."},{"label":"Getting cargo off","icon":"arrow","earth":"Cranes and forklifts work from the ground.","mars":"The cargo door is {sh_door} m up, so a lift and a folding crane bring everything down."}]},"living":"Ship days are the busiest of the year. Fresh crates roll into town on the haulers, new neighbours step out of the lift, and on calm evenings people walk out in pairs to First Landing, the ship that started it all, to watch the sunset turn its steel blue.","fact":"Turning a rocket into a home has been done before. Skylab, launched on {sh_sky_launch}, was a spare Saturn V stage fitted out as a space station, and three crews lived aboard for {sh_sky_days} days.","later":{"pics":{"city":"living/pics/ships-city.webp","far":"living/pics/ships-far.webp"},"city":{"tag":"First Landing","text":"The first ship still stands where it touched down, stripped and scorched, and people come out to see it."},"far":{"tag":"The ship yard","text":"Retired hulls stand in neat rows, their steel and parts building the city, while new ships land and lift off beyond."}},"pin":[0.565,0.4],"scene":{"pic":"living/pics/scene-ships.webp","look":"03-05","shot":"unloading","focus":"40% 55%","spots":[{"at":[0.38,0.44]},{"at":[0.47,0.62]},{"at":[0.65,0.8]},{"at":[0.16,0.84],"side":"left"}]},"proof":{"pic":"living/people/ships-proof.webp","place":"Earth orbit","when":"8 February 1974","head":"A rocket stage that became a home","credit":"Photo: NASA, the crew of Skylab 4 (public domain)"},"quiz":[{"q":"Can a landed Starship move itself to a new spot?","a":["No, it stands where it lands","Yes, it hops on its engines","Yes, it rolls on its legs"],"why":"A landed ship stays put until it flies again. Later, a slow many-wheeled mover carries emptied ships to the yard at about {sh_mover} km/h.","more":"NASA's crawler-transporter, which carries whole rockets to the pad, burns a gallon of fuel every 32 feet.","cite":"03-05 V-01, V-05, F-06","from":"problem","fig":0,"icon":"rocket"},{"q":"How do people get down from the cargo door?","a":["A lift basket on cables","A long ladder down the side","They jump: the gravity is low"],"why":"A basket rides cables from the door, {sh_door} m up, down to the gravel. NASA astronauts in spacesuits have already tried a full-size one.","more":"NASA's Moon version of the ship is about {sh_hls} m tall, as tall as a {sh_hls_storeys}-storey building, and its crew ride a lift down too.","cite":"03-05 V-02, F-02","from":"fix","fig":0,"icon":"arrow"},{"q":"How tall is a ship standing on Mars?","a":["{sh_h} m, about {sh_storeys} storeys","About as tall as a house","Over 200 m"],"why":"The ship alone stands {sh_h} m tall and {sh_w} m wide, with its cargo space high up near the nose.","more":"In {sh_wet}, Wernher von Braun proposed fitting out an empty rocket stage in orbit as a laboratory. Skylab did it on the ground instead.","cite":"03-05 F-01, F-08","from":"why","fig":0,"icon":"rocket"}],"notes":[{"beat":"fix","text":"Nothing heavy is carried by hand. Mars gravity makes a crate lighter to lift, but it is just as hard to stop once it swings.","cite":"03-02 P-05"}],"from":"From First Landing","everyday":{"title":"A ship comes in","items":[{"time":"08:00","head":"Safe to approach","text":"The ship has cooled and settled. Robots go first, then the crane crew climbs into the lift.","tag":"{sh_safe_lo} to {sh_safe_hi} days","pic":"living/pics/em-ships-mars.webp","pos":"60% 45%"},{"time":"11:30","head":"Crates come down","text":"The crane lowers reactors and rovers to a waiting hauler, and everything else rides the lift.","tag":"{sh_lift_lo} to {sh_lift_hi} t a lift","pic":"living/pics/scene-ships.webp","pos":"45% 55%"},{"time":"18:10","head":"Sunset at First Landing","text":"After work, people walk out in pairs to the first ship ever to land here and watch its steel turn blue.","tag":"{sh_h} m of steel","pic":"living/pics/ships-city.webp","pos":"45% 40%"}]}}