The Ark in Space Salmon of "SFX" rated the serial four and a half out of five stars, calling it "brimming with confidence". Salmon wrote that the concept of the Wirrn were so terrifying that the poor effects did not matter. In an analysis of apocalyptic themes in "Doctor Who", academic Andrew Crome highlighted the explicit religious influences on the writing of "The Ark in Space". He considered the eponymous Ark to be an analogue of the Biblical story of Noah's Ark, the ancient flood myth related in the Book of Genesis, and that the naming of the Nerva Beacon commander as Noah was
Noah it was in the days of Noah, so too it will be in the days of the coming of the Son of Man. For in the days before the flood, people were eating and drinking, marrying and giving in marriage, up to the day Noah entered the ark; and they knew nothing about what would happen until the flood came and took them all away. That is how it will be at the coming of the Son of Man." The First Epistle of Peter compares the saving power of baptism with the Ark saving those who were in it. In