Complex sentence: While Heceta sailed south, Quadra continued north in the expedition's second ship, the "Sonora", reaching Alaska, at 59 ° N. In 1778 English mariner Captain James Cook visited Nootka Sound on Vancouver Island and also voyaged as far as Prince William Sound.
Split into simpler sentences: While Heceta sailed south, Quadra continued north in the expedition's second ship, the "Sonora". He reached as far north as Alaska, at 59 ° N. In 1778 English mariner Captain James Cook visited Nootka Sound on Vancouver Island and also voyaged as far as Prince William Sound.