In Search for Captain Grant(1985)

movie - first aired/released 1985-05-13 - audience 6.9

Lord and Lady Glenarvan found a bottle in the ocean. this bottle contained a letter from captain Grant that he and 2 of his sailors had survived a disaster in sea and need help. Unfortunately, the letter was damaged by water, and only latitude is known (37 degrees), but no longitude. The Glenarvans decide to find captain Grant.