The following text is from the original listed building designation:

GILLINGHAM
TQ76NE YORK AVENUE 686-1/7/1 (South side) Medway Hospital, laundry water tower
GV II
Laundry water tower and chimney. c1900. Brick with lead pyramidal roof. Square plan. A battered tower has a plain crow-stepped gable to the entrance front defined by 8 round-arched recessed panels above, to an overhanging brick tank on false machicolations with gabled half dormers, to the sloping roof, to a central octagonal truncated chimney. Segmental-arched ground-floor openings, with a central doorway and flanking windows with metal frames, and an oculus above. HISTORY: a notable unified water tower and boiler chimney, and part of a former military hospital with wards and clock tower (not included). A rare design, listed for its landmark value and architectural interest. Flanking laundry buildings are not of special interest.
Listing NGR: TQ7697568044

Historic England archive material: BF101366 ROYAL NAVAL HOSPITAL, CHATHAM Miniature Format Film Number: 187/V

English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.