Complex sentence: She was transferred to the New Zealand Division of the Royal Navy on 31 March 1937 and recommissioned as HMNZS "Achilles", with a crew approximately 60% from New Zealand and 40% Imperial.
Split into simpler sentences: She was transferred to the New Zealand Division of the Royal Navy on 31 March 1937. Her crew was approximately 60% from New Zealand and 40% Imperial.