Complex sentence: In the following weeks, the fleet alternatively gathered and dispersed due to high winds while trying unsuccessfully to enter the Strait of Magellan and two ships were ship wrecked and one tacked into the Atlantic and deserted from the expedition.
Split into simpler sentences: In the following weeks, the fleet alternatively gathered and dispersed due to high winds while trying unsuccessfully to enter the Strait of Magellan. Two ships were wrecked and one tacked into the Atlantic and deserted from the expedition.