Sutler was the equivalent term for army suppliers, but that was not used by the Navy.
From the en.wikipedia.org
A sutler was a civilian merchant who supplied provisions for the troops.
From the omaha.com
I don't think that we should use sutler here but maybe adjust the definition of Victualler in Wikipedia.
From the en.wikipedia.org
Hunge isn't the only giddy sutler.
From the businessweek.com
Other characters visitors can meet are sutler store owner James Kinnerly and his wife, the colonel's cook, played by Chris Ashton and his wife, Julie.
From the omaha.com
More examples
A supplier of victuals or supplies to an army
A sutler or victualer is a civilian merchant who sells provisions to an army in the field, in camp or in quarters.
(Sutlers) A common sight in the camps of Civil War soldiers was a string of huts or tents bulging with various items for sale. These business establishments belonged to sutlers, civilians officially appointed to supply soldiers with a long list of approved items. ...
Accompanies troops in the field or garrison and sells food, drink, and supplies
A peddler who followed the armies to sell food and supplies to the soldiers.
A person who followed an army or maintained a store on an army post to sell provisions to the soldiers.
Another name for a victualler - a civilian merchant selling goods to the army.
A Civil War term for a seller of items. In Civil War times this ranged from food to guns and other equipment. Today the term represents people who specialize in making clothing or selling other dry goods for impressions.
A civilian storekeeper who accompanies an army and sells liquor, provisions, and other supplies to the troops.