USS Sirius is an Odyssey-class heavy explorer and the flagship of Sirius Squadron, under the command of Commodore Matt Rourke. With her size and self-sufficiency, Sirius is the main hub of all formation operations, able to support and supply other starships and their crews for an extended duration. When operating in the Midgard Sector, Sirius serves as a forward command post for missions across the region, or is directly responsible for humanitarian, scientific, or strategic duties requiring her vast resources. Whether at the heart of a deployment of the whole squadron or taking primary responsibility for a specific operation, the assigning of the USS Sirius to a mission demonstrates command takes a matter deeply seriously.
For the main home of Sirius Squadron’s adventures, visit the USS Endeavour.
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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.
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Commanding Officer
Commander, Sirius Squadron
Executive Officer
CO, USS Alhabor
Diplomatic Mission Leader
Chief of Strategic Operations
Chief Science Officer
Chief Medical Officer
Chief Tactical Officer
Chief Security Officer
Chief Engineer
Chief Operations Officer
Chief Flight Control Officer
Chief Counsellor
Head of Social Sciences
Head of Stellar Sciences
Diplomatic Aide
CO's Yeoman
Civilian
CO, CUV Edorasc
7 May 2025
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
She found him as they had always found one another these past few weeks: alone in the dark, with only strategy plans and intelligence reports for company in the deep nest of the Rookery. ‘Come to also tell me why I’m wrong?’ Rosewood didn’t need to turn around to know it was her. He stood [...]
6 May 2025
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
‘…Ranger’s port nacelle is still offline, and engineering reports structural stress through the secondary hull. She’ll need at least forty-eight hours for priority repairs.’ There were only five of them in the CIC, and as Rosewood listened to Valance’s summary of the state of the [...]
4 May 2025
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
The corridors of the Vaadwaur cruiser were twisted metal and scorched plating, the shattered hull a metal grave spread across the blazing sands. Cassidy and Rosewood moved through them with cool purpose, rifles raised, every step echoing through the ship’s carcass. They passed bodies along the [...]
3 May 2025
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
Fine red dust kicked up in the wake of the Nomad, its reinforced treads chewing through the sands of Threshold as it bounded up and over rolling dunes that, when they had landed, had stretched as far as the eye could see. Though they could not see their goal itself, they could see the sign of it: [...]