Other than "being a naval base", is there any background in any of the Dark Heresy supplements about this system, or the Battlefleet Calixis force stationed there?

I know the Port Wander naval detachment is pretty well fleshed out (Rogue Trader) and there's a Battlefleet Calixis warship named in one of the Purge The Unclean missions, but I don't know if I've missed a gazetteer entry somewhere...

Trying to figure things out, as assorted pirate-related (and hence navy-related) shennanigans are involved in an ascension campaign I'll be running.

Equally, trying to get a handle on the size of the Battlefleet.

De'Aynes Ships Of The Gothic Sector mentions something like a couple of dozen ships of the line by name - although the Gothic Sector strikes me as a much more active naval station (the blackstone fortresses and Port Maw), plus some of those ships (the Dominator -class one, for example) were transferred in as reinforcements during the war.

Essentially, how big is a sector fleet (and hence, I guess a subsector fleet) - i.e., barring calling in reinforcements or reactivating mothballed ships, how many warships does the Drusian Marches' admiral have at his disposal? Essentially, how widespread actually are navy patrols given the number of systems in the Marches?

Also, has it been stated anywhere which system is the Marches' subsector capital? I'm assuming (given the name) Drusus/Sentinal, but I don't recall seeing it definitively stated.

Other than "being a naval base", is there any background in any of the Dark Heresy supplements about this system, or the Battlefleet Calixis force stationed there?

I know the Port Wander naval detachment is pretty well fleshed out (Rogue Trader) and there's a Battlefleet Calixis warship named in one of the Purge The Unclean missions, but I don't know if I've missed a gazetteer entry somewhere...

Trying to figure things out, as assorted pirate-related (and hence navy-related) shennanigans are involved in an ascension campaign I'll be running.

Equally, trying to get a handle on the size of the Battlefleet.

De'Aynes Ships Of The Gothic Sector mentions something like a couple of dozen ships of the line by name - although the Gothic Sector strikes me as a much more active naval station (the blackstone fortresses and Port Maw), plus some of those ships (the Dominator -class one, for example) were transferred in as reinforcements during the war.

Essentially, how big is a sector fleet (and hence, I guess a subsector fleet) - i.e., barring calling in reinforcements or reactivating mothballed ships, how many warships does the Drusian Marches' admiral have at his disposal? Essentially, how widespread actually are navy patrols given the number of systems in the Marches?

Also, has it been stated anywhere which system is the Marches' subsector capital? I'm assuming (given the name) Drusus/Sentinal, but I don't recall seeing it definitively stated.

88 TANSTAR-

Frontier World; Drusus Marches

Very brief description DHRB:323

Incident At Fall Narrow DotDG:93

Plus there is a reference in the Calixis Timeline to the Fall Narrow Incursion, placing it a 623.M41

Otherwise I haven't seen any references to it.

I'm also assuming Drusus/Sentinel, but haven't seen it specifically stated.

As for number of ships that depends entirely on your own interpretation; nothing concrete has even be written AFAIK.

Essentially, how big is a sector fleet (and hence, I guess a subsector fleet) - i.e., barring calling in reinforcements or reactivating mothballed ships, how many warships does the Drusian Marches' admiral have at his disposal? Essentially, how widespread actually are navy patrols given the number of systems in the Marches?

Short answer: Bugger'd if we know. Nothing has ever been written about this.

Best we can do is look at what we do kn ow.

Battlefleet Koronus has some information on the size of the forces guarding the Maw.

Good Old Battle Fleet Gothic had a picture of 'Battlegoup Sartus' (on p. 55), with

12 Cobras

5 Dauntless Light Cruisers

9 Sword Frigates

6 Firestorm Frigates

1 Retribution Battleship

1 Mars Battle Cruiser

1 Lunar Cruiser

1 Tyrant Cruiser

(and some auxillaries)

...which is far from the entire Battlefleet Gothic.

It must also be understood that sectorfleets need not be all the same size and indeed aren't.

Eg. Battlefleet Calixis is likely to be significantly smaller than Battlefleet Scarus (which patrols near the Eye of Terror).

88 TANSTAR-
Frontier World; Drusus Marches
Very brief description DHRB:323
Incident At Fall Narrow DotDG:93

Thanks. Will look those up.

I was working on the theory that the 'named ships' in the BFG rulebook (of which there are about 2-3 for most classes) between them represented the bulk of if not all of the capital ships of Battlefleet Gothic.

A potentially flawed assumption, I know, but surely even the Imperial Navy can't maintain that many capital ships "per world" when each the crew of each one represents the combined armed forces of south africa...

Also, has it been stated anywhere which system is the Marches' subsector capital? I'm assuming (given the name) Drusus/Sentinal, but I don't recall seeing it definitively stated.

Judging by the description in DHRB it is unlikely. I would bet on Thical - at least , that there is the residence of sub- sector Cardinal .

I've never seen any mention of how large Battlefleet Calicis is, so in my campaign I ruled that it was approximately 100 ships (mostly escorts, with only a few cruisers and a single capitol ship). I chose this number partly to facilitate a situation in my campaign: one of my players has a Void Born PC who rolled 'Naval Vessel' as the type of ship she was born on, so whenever the Acolytes are given passage on a new Naval ship, I have the Void Born character roll, assigning a 1% chance that this is the very ship she was born on...