Number 6 Sail Loft (Mo 61)

Number 6 Sail Loft is a store and sail loft built between 1840 and 1850. It is constructed from squared and coursed limestone with granite dressings and features a hipped slate roof. The building has a rectangular open plan and is two storeys high with a nine-window range.

The exterior includes a plinth and a plat band, with central segmental-arched entrances, although the southern entrance has been bricked up. The entrances are beneath matching tripartite sashes, with round-arched sashes on the ground floor and segmental-arched sashes on the first floor, both with 9/9 panes. There are tall, narrow hoist bays located in the first-floor third and seventh bays. The ends of the building have two round-arched carriage entrances below a single segmental-arched tripartite window, which has a boarded door in the central part.

Inside, the ground floor features a central aisle supported by pairs of tied timber posts with diagonal struts leading to wide pillars beneath tie beams. There is also a stair flight with an uncut string located in the northeast corner.

Historically, this building pairs with Store No.3 and was likely used for stabling gun teams, with the sail loft situated above. It is part of a significant group of naval stores, some of the last constructed by the Board of Ordnance, within the best-preserved naval ordnance yard in the country.