Oceanus Procellarum
The robotic lunar probes Luna 9, Luna 13, Surveyor 1 and Surveyor 3 landed in Oceanus Procellarum. Luna 9 landed southwest of Galilaei crater in 1966. Luna 13 landed southeast of Seleucus crater, later in 1966. Surveyor 1 landed north of Flamsteed crater (within the larger Flamsteed P) in 1966, and Surveyor 3 landed in 1967. The Chinese probe Chang'e 5 landed at Statio Tianchuan on Mons Rümker in Oceanus Procellarum in December 2020 and collected of lunar rock samples.