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USS Mercury

Obena-class • NCC-83010 • Redemption Operations and Outreach DivisionSirius Expeditionary Squadron • Fourth Fleet

The USS Mercury is an Obena-class emissary providing crucial engineering and diplomatic support to Sirius Squadron. A veteran of a thousand humanitarian responses and diplomatic outreaches, her experience reaches back twenty years and spans the breadth of the Alpha and Beta Quadrants. From the tensions of the Federation interior to troubled frontiers to neighbours in need of friendship or assistance, the Mercury and her crew have never feared to get their hands dirty to help anyone in need. Today, she forms part of the Operations Division of Sirius Squadron, bringing aid to the most burdened reaches of the galaxy and extending the hand of Federation friendship.

Sirius Expeditionary Squadron

Sirius Expeditionary Squadron is a unit centered around the Odyssey-class USS Sirius under the command of Commodore Matt Rourke. Sirius Squadron stands ready to deploy outside or on the fringes of Federation territory at short notice to respond to emerging situations across the galaxy. With multiple versatile and powerful ships at its disposal, the squadron can operate independently and without support for extended periods, and is flexible enough to face a range of missions, including under volatile circumstances where objectives and conditions can quickly change. While this profile often leads Sirius Squadron to respond to geopolitical crises, the unit’s versatility make it equally suited emergent scientific investigations.

The main unit, organised around the Sirius herself, is an element of several powerful ships each able to take the lead or act independently depending on the mission’s needs. Deployed together, they are a supremely well-rounded and capable unit. Two additional divisions provide specialist support. The first, headed by the USS Redemption, acts as an operations element to provide engineering, humanitarian, or diplomatic services. The second, headed by the USS Liberty, fulfils dedicated exploratory or scientific missions. The divisions may deploy independently or in support of one another, depending on operational needs.

To follow the main stories of Sirius Squadron, visit the USS Endeavour Command page.

Badge by user; ‘Star dog’ image element generated with Midjourney

Squadron Commands

Liberty Science and Exploration Division

Redemption Operations and Outreach Division

Learn More about Squadron

Crew Manifest

Recent Stories

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5 April 2025

Inferno - 2

Inferno

Gateway Station, USS Blackbird, USS Endeavour, USS Liberty, USS Memphis, USS Mercury, USS Ranger, USS Redemption, USS Scylla, USS Sirius, USS Swiftsure and USS Tempest

‘Huh.’ That was the first response any of the assembled officers could gather as the last echoes of Cassidy’s briefing faded through the special operations unit lounge. Nallera was sprawled on one of the beanbags, the beef jerky she’d been chewing on as she’d come in now dangling out the [...]

4 April 2025

Inferno - 1

Inferno

Gateway Station, USS Blackbird, USS Endeavour, USS Liberty, USS Memphis, USS Mercury, USS Ranger, USS Redemption, USS Scylla, USS Sirius, USS Swiftsure and USS Tempest

Cassidy didn’t rely on hope. Hope was much like promises, with both so often broken. Today, hope looked like a nearly constructed graviton catapult hovering in orbit of Midgard III next to Gateway Station, a towering spaceframe of projectors connected to a thrumming power core. Today, hope looked [...]