Complex sentence: On 3 September 1942 "Avenger" under command of an ex-Swordfish pilot Commander A.P. Colthust left Britain for Iceland, the weather conditions were cold and in the heavy seas one of her Sea Hurricanes was lost over the side.
Split into simpler sentences: On 3 September 1942 "Avenger" under command of an ex-Swordfish pilot Commander A.P. Colthust left Britain for Iceland. The weather conditions were cold, and in the heavy seas one of her Sea Hurricanes was lost over the side.