Mess hall
A mess hall was a location on Federation and Klingon starships or starbases where crewmembers could relax and enjoy a meal or a quick snack in a social setting. An old Earth nautical term, for the mass dining room for ships crew. 

It was also the place where officials, such as ambassadors of other worlds, were entertained. Gatherings were also held there.

The person in charge of activities within the mess hall held the title of mess officer. ()

J-class 
Aboard  freighters, the mess hall was in room A3. The J-class mess hall had at least two circular windows and four tables. On the opposite wall from the windows was a counter, featuring a metallic, manual drinks dispenser. There was a pair of double-doors on each of the other sides of the room. Food available included strawberry shortcake nutri-paks. Drinks could be consumed in metallic mugs found at the counter. ()

Freedom-class 

The  had a combination of a mess/recreational hall, which was located on the forward end of the saucer section. It featured one table with at least six chairs and a leather couch across the room. ()

NX-class 

Earth Starfleet  starships of the 22nd century were outfitted with large mess halls. Boasting several large windows, the NX-class mess hall was a buffet-style environment; food prepared in the ship's galley was brought to the mess hall and stored in a serving case located on a bulkhead adjacent to a drink dispenser. (, et al.)

Aboard the starship , the mess hall was converted into a theater on some Tuesday nights for "movie night". A large screen was erected in the mess hall, controllable from bridge stations on A Deck. (, et al.)

Located just aft of and connected to the mess hall was the captain's mess. (, , )

Crossfield-class 

The mess hall of a  starship featured a food synthesizer and several small windows along the hull. The room also featured multiple tables and seats, which were colored white. Aboard the Crossfield-class  in 2256, the mess hall's innermost wall featured drawings that comprised a memorial of starships lost in battle. ()

Defiant-class 

Like much of the internal spaces aboard  starships, the mess hall was compact, functional and had no windows. It was equipped with one food replicator. The mess hall could also be used for meetings with the ship's crew. ()

Worf often ordered prune juice in the mess hall of the Defiant. Once, he received a cup advertising Quark's. ()

In 2372, Dukat and members of the Detapa Council underwent blood screenings in the mess hall after being rescued by the Defiant. ()

Several weeks later, the mess hall was the site of a meeting between Captain Sisko, Quark, and Hanok. Later, a Jem'Hadar torpedo impacted into the mess hall, but did not explode immediately. Quark and Hanok were able to defuse it. ()

Later that year, the mess hall was the site of a briefing session between the crew of the Defiant and Weyoun's Jem'Hadar soldiers. ()

During the early months of the Dominion War, the crew placed depleted phaser relay power cells in the mess hall as a sign that they would never stop fighting. ()

Ixtana'Rax had the senior staff of the Defiant held in the mess hall after the Jem'Hadar briefly captured the starship in 2374. ()

Quark was ordered to stay in the mess hall as the Defiant fought its way to AR-558 in 2375. ()

Intrepid-class 

On  vessels, the mess hall was on Deck 2, Section 13, with turbolift access in the corridor outside the starboard entrance. Some ships were equipped with four food replicators, with a private captain's dining room just behind the mess hall. The dining room could be reconfigured, and two of the replicators removed, to serve as a kitchen, as was done by Neelix aboard the . () The 's mess hall was also fitted in this manner. ()

Since replicator rations were in short supply aboard Voyager, Neelix supplemented food stocks with vegetables from the airponics bay along with food obtained from trading and scouting missions.

The mess hall aboard Voyager was host to many social gatherings, including diplomatic affairs, () birthday parties, () ping pong games, () and holiday celebrations. ()

In mid-2378, after Neelix had departed Voyager, Chell wanted to take over duties in the mess hall. The ship returned to the Alpha Quadrant shortly following, and it is not known if Chell was given the position. ()

The mess hall also served as a makeshift sickbay whenever that facility was disabled or otherwise overwhelmed. ()

Klingon Bird-of-Prey 
Several Klingon Birds-of-Prey – such as the , the , and the  –  were known to include mess halls. (; )

In 2373, a fight involving Kornan, Leskit, and Ortikan broke out in the mess hall of the Rotarran. ()

When Alexander Rozhenko joined the crew of the Rotarran, he was mocked by Ch'Targh and others in the mess hall. ()

In early 2375, Miles O'Brien, Julian Bashir, and Quark ate gagh in the mess hall of the Rotarran. Quark complained about the lack of a variety of foods. ()

See also
 Mess call
 Officers' mess
 Recreation room
 Ten Forward
 Wardroom

External links
 
 

de:Messe
Spacecraft sections