English to Spanish Other Ships, Sailing, Maritime Naval Form Terminology

Hello everyone,

Context: A military form with information about a ship´s information.

The term:
"READINESS CONDITION IV"

I did some reading on this topic and I understand that ships have different levels of "readiness". The thing is, I don´t know what official term is used in Spanish. So I have a rather "literal" translation so far.

My try:
"CONDICIÓN DE PRESTEZA IV"

Thank you for any help.