" The ship was as huge as a whale" is the best way to rewrite the sentence.
Explanation:
The Reason why this phrase is the best way to put the sentence because :-
1. Comparison - When a comparison between two things is made it helps the reader to create a imaginary image in front of them which made the sentence have weight age and have more value to it.
2. Imaginary Ability- While giving a example with the sentence , it enhances the ability of the reader to make an image in there head which would help them to understand the sentence better.