The no. and location of Anti- Exposure Suit on your ship can always be found in the “fire control and safety plan” of the ship which is always posted on bridge & other conspicuous places.
Minimum carrying requirement
According to SOLAS CH III, regulation 7.3
An immersion suit or an anti-exposure suit of an appropriate size, shall be provided for every person assigned to crew the rescue boat or assigned to the marine evacuation system party. If the ship is constantly engaged in warm climates where, in the opinion of the Administration thermal protection is unnecessary, this protective clothing need not be carried.