The Moravian Church Mission Ships were a series of twelve ships (five named Harmony) that made an annual voyage from London to the Moravian Church mission stations in Labrador every summer for the 156 years between 1770 and 1926.
[1][2] All but one were pure sailing vessels; the final ship, Harmony #5, had an auxiliary steam engine.
[2] Two further stations were added after this period at Happy Valley near Goose Bay (1957) and North West River (1960).
[2] [1][2] In the summer of 1919, SS Harmony #5 carried Spanish flu from St John's to Hebron and Okak.
[6] In Okak 204 of the 263 residents died, including every adult male Inuit; the survivors dismantled the community entirely, burning all houses and furniture before moving to Nain, Hopedale or Hebron.