182. Surveyor 1, believe it or not, had no scientific instruments on board. It was meant only to land and send back pictures to prove it. Surveyor 2 crashed. Surveyor 3 managed to land, but it carried nothing scientific, and Surveyor 4 crashed. Surveyor 5 was the first lander to carry any measurement equipment. Surveyors 6 and 7 also used pre-atomic steel.