Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
Navy is regular. It follows the -ies Conversion rule.
Use plural verbs: "The navies are ready" (not "is ready").
Yes. The plural navies is standard across all English variants.
The word navy follows the standard English pluralization rule. When forming the plural, navy becomes navies. This follows the -ies Conversion pattern, which is one of the most common plural rules in English.
Understanding why navy becomes navies helps with spelling and pronunciation. Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
When using navies in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The navies are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.