I believe to meet the standards they indicate it would have to be some form of deluge system, but I haven't been in the boat storage unit or looked that carefully.
I would think from common sense there are many regulations regarding the storage of plastic, the storage of flammable materials, the storage of liquids, all of which a boat storage building has.
This is a document on the subject. Here is part of the foreword:
Specific criterion for the design and installation of fire protection for boats stored on racks inside of buildings is currently lacking. NFPA 303, Fire Protection Standard for Marinas and Boatyards requires that automatic sprinklers systems comply with the provisions of Chapter 12 of NFPA 13, Standard for the Installation of Sprinkler Systems for Group “A” Plastics. However, NFPA 13 does not specifically address indoor rack storage of boats. Fire test data of
boats in rack storage is needed to establish more specific requirements for fire control and protection of this type of vessel storage. This project recognizes and addresses this problem by providing a literature review, documenting loss history, and carrying out a hazard analysis of fires involving indoor rack storage of marine vessels in boatyards and marinas. The information helps to clarify additional
research needs that, if addressed in a subsequent research project and ultimately completed, would establish important design parameters such as water demand, automatic sprinkler placement and other essential design requirements for the control and extinguishment of
unwanted fires. The results this study, and such a follow-up research project, are of direct interest to the Technical Committees responsible for NFPA 303, Fire Protection Standard for Marinas and Boatyards and NFPA 13, Standard for the Installation of Sprinkler Systems.
http://www.nfpa.org/~/media/files/r...arch-foundation-reports/boatstorage.pdf?la=en