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Logistics Ships

Rule set question aside..
Sigg, Fly...

dispersal of manufacturing of your assets to bring them together and assemble is quite logical, and economical.

Your higher tech A-class yards could do the final assembly [where the Power plant and drives are installed]. Tankers and Dromedary ships aren't armored very much, so yes, the hulls can be bult elsewhere. With Tankers, thes hulls don't have to be streamlined, further cutting costs [Going hand in glove with the Tanker-Shutttle-refueling idea here]. Dispersed modular hulls cuts down even further time/ money--and farms the work out to C-class port worlds which by JTAS, could assemble orbital habitats as low as TL-8.

The "all made at one TL" ship puts the burden on those fewer worlds of TL-D, E & F that produce J-4 drives.

Some good thinking here!
 
Originally posted by Ran Targas:
Wouldn't it make sense for most military fleet support ships to be modular? with multi-mission capabilities? Need a tanker, strap on tanks; need dry goods, strap on boxes; need medical, strap on hab units. Sort of the Franz Joseph-USS Ptolemy approach.
The problem I see here is that few of the ship design rules properly model the reality of modular vs purpose built ships.

In reality a modular ship sacrifices aspects for the ability to do many jobs. Purpose built ships are usually more economical, both volume and cost wise. Traveller in general does a poor job of modeling this.

Not saying the idea is bad, just that there are trade offs to consider that the system ignores or merely makes a nod to that should be accounted for.
 
Hmmmm..Far Trader's point well taken..

and in the big economy of the Imperium (1st-3rd).. the doctrine of such ships was placed before us.

Therefore wouldn't a Tanker also be able to double-up as a dromedary--using those big fuel tanks on one or two for hauling the beans, bulets, spare crew, missiles, etc sand caster reloads, parts, tools, what nots?
 
Comes war though the subbies are activated as merchant navy auxiliaries
(in a hurry) two problems. one, when the fleet commander gets a sudden order to move, all his intended supply ships are all over the place, maybe take weeks to round up. this could be a problem even for redeployments and training. two, the civilian economy will be geared to this cheap transportation. right when things get difficult, it's all suddenly taken away.

supply and support ships should be dedicated.
 
Originally posted by Liam Devlin:
Therefore wouldn't a Tanker also be able to double-up as a dromedary--using those big fuel tanks on one or two for hauling the beans, bulets, spare crew, missiles, etc sand caster reloads, parts, tools, what nots?
Fuel tankage can't be used for carrying cargo when empty though, unless you have demountable or collapsible fuel tanks installed in cargo space...

hmm, it should work. It'll cost a bit more, but it should work.
 
Originally posted by flykiller:
<snip>

supply and support ships should be dedicated.
Which brings me back to the 15-19kt j4/m6 fleet escort.
Cargo can be carried in empty weapon bays up to the full capacity of the bay - it's only small craft and vehicles that waste space in bays.

These ships could therefore in emergency be converted into true warships.

I would build an almost identical vessel but arm it with a meson spinal - an Escort Destroyer.
 
Originally posted by Sigg Oddra:
Cargo can be carried in empty weapon bays up to the full capacity of the bay - it's only small craft and vehicles that waste space in bays.

These ships could therefore in emergency be converted into true warships.
A major feature of almost all subbies imtu.
 
Originally posted by Sigg Oddra:
Originally posted by Liam Devlin:
[qb] Fuel tankage can't be used for carrying cargo when empty though, unless you have demountable or collapsible fuel tanks installed in cargo space...

hmm, it should work. It'll cost a bit more, but it should work.
=================================================
Expenses? The Third Imperium could afford it...a smaller state might not..But with the right tweaks, you could build same class of vessel--just that those "huge tanks" aren't for fuel..but cargo bays!
 
Originally posted by flykiller:
</font><blockquote>quote:</font><hr />Comes war though the subbies are activated as merchant navy auxiliaries
(in a hurry) two problems. one, when the fleet commander gets a sudden order to move, all his intended supply ships are all over the place, maybe take weeks to round up. this could be a problem even for redeployments and training. two, the civilian economy will be geared to this cheap transportation. right when things get difficult, it's all suddenly taken away.

supply and support ships should be dedicated.
</font>[/QUOTE]Fair points in some cases, I just don't see them as that big an issue imtu.

First point, I have to guess you mean shifting from peacetime to wartime deployment. Peacetime the fleets will be operating (for the most part) quite routinely and easily able to coordinate with the subbies on their regular routes. This has the added benefit of providing protection for the subbies in their regular route service (not all and not always). Now when the commander is notified that he is at war he commandeers the subbies in system (no rounding up) and the rest of the route traffic is likewise advised. Those in port and not immediately needed will be refitted (weapons added, staterooms converted to double occupancy or bunks, dismountable tanks installed in some cargo space, computers upgraded/re-programmed, small craft swapped or navalized, etc.).

Second point, not all subbies will be attached directly to fleets, many will still be needed for the civilian use as noted, but most of the civilian efforts will be redirected to wartime needs as well. There will be hardship, and the population will have to deal with it. No more luxury imports and even essentials will be reduced. Rationing is nothing new for civilians in wartime. Well, maybe it is to some, or would be if it were done (civilian life in the US for example is entirely unaffected by the current war as regards going without anything to support the war, quite a change from the world wars).

Finally, agreed there would be some dedicated support and logistics ships. The big stuff that subbies really aren't suited to. Like fast refining and scooping of large quantities of fuel. Hot grabs of disabled ships off the front. Mobile field repair yards for quick return to action after damage. And even large hospital ships.

Feel free to elaborate when not so pressed for time
 
A very interesting thread with the usual great posts from the usual thoughtful(1) posters...

Now my 0.02 CrImps:

- The wretched(2) MT product Fighting Ships of the Shattered Imperium lists a few tanker and 'dromedary' designs. However, since most Traveller warship designs - including the official ones - ignore cargo provisions, I think it safe to say that logistical concerns weren't on anybody's mind when our tiny peek at the Imperial Navy slowly accreted over 25 years.

There's an old saying that goes something like: 'Amateurs study tactics, professionals study logistics.' Very few wargames deal with logistics except in the most cursory way and RPGs don't deal with logistics much better. Except when the plot demanded it, when was the last time you made your PCs actually count man-rations?

The 'lack' of a supply network, like the 'lack' of a detailed Imperial budget, is one of those places where the simulationist aspect of Traveller fades behind the gamist aspect of Our Olde Game. And that's a good thing too!

- Auxiliary assets are canonical as these few examples will illustrate. A 'Marches Auxiliary Naval Service' exists and is referred to in a few materials. Planetary governments and groups of governments routinely subsidize the operation of small, under 500dTon, merchantmen that can be pressed into government service at a moment's notice. Oberlindes jump started its expansion into a sector-wide line through the purchase of surplus 'naval transports'. The examples abound.

While, as Fly points out, the scheduling and marshalling difficulties these assets bring with them are real, the IN seems to use civilian call-ups in the Marches. Keep in mind too that the Marches are one of the Imperium's few 'hot' borders.

- Walt Smith at the 'ct starships' Yahoo group posted some logistical rules a few years ago. IIRC, he based them on Beltstrike and other references. I don't recall the precise details, but I do recall they 'fit' my view of things. The materials even took into account 'supply heavy' weapons like missiles. Sadly, the link I have to Walt's pages is dead. Google may be able to resurrect the material though.

- For all our emphasis on underway replenishment, we must remember that it is a fairly recent practice; WW2, and is not one that many navies; the USN primarily with a few NATO allies using USN ideas, equipment, and assets, can perform or attempt to perform. There are training issues (can the crew handle it?), equipment issues (do they have the tools? are the ships set up fo it?), and shipping issues (do you have the specially designed and dedicated supply vessels?). Even within the USN, un-repping is not the norm. My last ship, California, only 'un-repped' for training. We needed no bunker fuel; the MAJOR reason for un-reps, never needed to fill our magazines, and our food/mail/movies needs could be met by a bi-monthly helo.

We should also remember that, for all the fleet train tonnage and air transport capacity the US military enjoys, USN vessels still routinely purchase food stuffs, various sundries, and even POL in the ports they visit. Not in all ports to be sure. My ship SUP-O bought nothing at Karachi for example, but did make heavy purchases at Singapore.

- The Imperial Navy seems to rely on bases much in the same manner that the Royal Navy did up through WW2. When the RN joined the USN in the Pacific after VE Day, they found they could not keep up with the USN's task forces because they did not have a 'fleet train' of their own and their vessels could not 'plug into' the USN fleet train due to various training/equipment issues. While USN carriers and escorts ranged for months off the coast of Japan, RN carriers and escorts needed to return to protected anchorages for resupply after only a week or two of operations.

A look at the number of bases the IN can rely on in a typical subsector is illuminating. In Mora/Spinward Marches - not a border subsector by any stretch of the imagination - the IN has bases at Mercury, Moran, Mora, and Hexos. Adding to this list are IISS scout bases; where the IN enjoys reciprocal basing rights, at Nadrin, Dojodo, Mercury, Mora, Meleto, and Mainz. That is a total of 10 bases among eight systems in a subsector of only 26 worlds.

Given those base numbers, given the fact that IN vessels can purchase life support needs, and given the fact that fuel processors mean that fuel is essentially 'free' for warships in Traveller, how many tons of jump-capable, 'fleet train', supply-the-warships-directly vessels does the Imperial Navy actually need? How much of that tonnage does the IN rely on? How much does it plan to rely on?

- Other than the Rim War; which was an oddity in so many ways, the Imperial Navy hasn't engaged in extended offensive operations beyond the Imperium's borders in centuries. There has been no 57th Century version of the 'Plan Orange - Drive Across The Pacific' that demanded the development of the USN's current un-rep capabilities.

The IN fights at home and not at the end of a multi-month long supply chain. To be sure, there are the occasional 'deep strikes'; SMC mentions a few against Zho worlds in Chronor, but the IN normally fights at home from an established network of bases.

IMHO, for the most part, IN supply ships are in-system lighters transferring material from bases, supply dumps, and depots to warships. IMHO, a jump capable 'dromedary' travelling with the fleet and dispensing reloads is quite rare in the IN. IMHO, what is seen more often is a temporary supply depot consisting of auxiliary container ships, a security force, and oddles of small craft buzzing about at 6gees to resupply the CruRon just rotated back from the front.


YMM and should V.


Have fun,
Bill

1 - Not stroke any egos here, but if I see a thread with certain names in it - and you all know who you are - I always read it no matter what the topic.

2 - Almost all of which are broken with regards to their own design system hence the alternate title Shattered Ships of the Fighting Imperium.

(edited for spelling and prose - WRC)
 
Well posted Bill. Excellent thoughts and the actual experience to back it up counts for a lot imo.

You might try your bookmark(s) for Walt's site pages through The Wayback Machine. I'm always amazed at what they have archived. Drop us the link if you have any luck :D
 
Excellent discussion, all!

Some of you may be familiar with the book...
THE THIRD WORLD WAR AUGUST 1985 by Sir John Hackett et.al. This book discuss a theoretical Warsaw Pact incursion into West Germany.

The "Reforger" exercises, (which I never participated in, so forgive me if I err) were set up to reinforce US forces in Germany, marrying them up with prepositioned equipment by shuttling them across the Atlantic on civilian 747s.

Aeroflot, the Soviet airline, was set up the same way, to provide logistic support in a war situation.

Someone remind me--wasn't there for many years a premium placed in getting reserve pilots into the airlines for just such an emergency? Seems like the OTU would have had a similar program, though I don't have the references to confirm that...
 
Originally posted by Dominion Loyalty Officer:
Someone remind me--wasn't there for many years a premium placed in getting reserve pilots into the airlines for just such an emergency? Seems like the OTU would have had a similar program, though I don't have the references to confirm that...
I think you are recalling that first part right, and I don't know about the otu but mtu had a program for putting retired IN officers in command of subsidzed ships for just that reason. Not exclusively, but preferentially.
 
Well posted Bill.
yes, as usual.

mtu has dedicated supply ships for two reasons.

the biggest is that after implementing my assumptions regarding the fleet and after the imperium's full warship construction capacity is met, I still have quite a bit of low-tech yard space available, particularly at porozlo and junidy. they can build good-enough logistics vessels, so they do.

secondly, a fleet that is tied to bases is equivilant to a short range coastal defense force. a fleet with organic logistics able to procede independent of base support is a power projection force able to operate anywhere at will. I went with the latter model because the first model does not seem to be robust or flexible in any military scenario above that of police, while the second is robust and flexible on offense and defense.

too if money matters then supply ships are cheaper than supply bases. every supply base will have to retain on-hand everything that any of several fleets will need. and several times over - you wouldn't want a beat-up first fleet to stagger into port looking for parts, only to find that second fleet has cleaned the place out and left.

organic logistical support is a force multiplier in the traveller environment. if I didn't have porozlo and junidy available, I'd give up some warships to obtain that support.

as for activating civilian auxilaries, it's a great peacetime business model. as a war effort it would be really unpleasant. admirals waiting weeks for logistical support to assemble, fleets jumping without support hoping the auxilaries catch up with them, lightly armed cargo ships blundering around looking for their fleets and hoping they don't run across enemy raiders, civilian captains thinking, "do I really want to find these guys?" I certainly wouldn't want to live it.
 
Originally posted by far-trader:
You might try your bookmark(s) for Walt's site pages through The Wayback Machine. I'm always amazed at what they have archived. Drop us the link if you have any luck
Dan, Thanks for the link but Walt seems to have configured his pages to deny access to 'robot' web-crawlers, the very cyber-devices that would have indexed and saved his pages. :(

At least that's the answer the 'Wayback Machine' gives me.

Anyway, I'll be posting in 'ct-starships' in the hopes of connecting with Walt and retrieving his materials.


Thanks again,
Bill
 
No problem Bill, and congrats* on your recent cross over the 1000 post mark :D

* I think it's worthy of note being they are mostly quality posts, and the ones that aren't are at least entertaining
file_22.gif
;)
 
Originally posted by flykiller:
mtu has dedicated supply ships for two reasons. the biggest is that after implementing my assumptions regarding the fleet and after the imperium's full warship construction capacity is met, I still have quite a bit of low-tech yard space available, particularly at porozlo and junidy. they can build good-enough logistics vessels, so they do.
Fly,

That is as good a reason as any. Those low-tech yards should be doing something after all.

secondly, a fleet that is tied to bases is equivilant to a short range coastal defense force. a fleet with organic logistics able to procede independent of base support is a power projection force able to operate anywhere at will. I went with the latter model because the first model does not seem to be robust or flexible in any military scenario above that of police, while the second is robust and flexible on offense and defense.
I don't see the Imperial Navy doing 'power projection' anymore and I think the oddly high number of IN bases is an indication of that. Sure the IN did project power during the Rim War, but the Rim War is the exception in so many ways. Since the Civil War, the Imperium has not projected power beyond its borders for any appreciable period time in any real sense. I would further suggest that, outside of the Marches, Rim, and Corridor Sectors, the IN is a police force.

too if money matters then supply ships are cheaper than supply bases.
The IN does have an oddly high number of bases and an even higher number of bases in which it has basing rights. Furthermore, not all bases are created equal. Not every base need supply every requirement of every ship.

Your last ship, Vinson, and mine, California, shared a base, NAS Alameda, that did not and could not provide every need of those vessels. There was no shoreside maintenance support, no fleet parking, sewage capacity wasn't enough, there were even no laundromats and yet both warships were homeported in Alameda. Any time anything 'real' needed doing, both warships pulled rods and steamed to San Diego. And that is an example from a navy that practices force projection on a daily basis.

Instead of only purpose built, specialized dromedaries or only fixed dirt-side supply depots, I'm suggesting something in between: 'imperialized' container ships escorted to systems near the front where they can resupply IN vessels. Think of it as 'fleet train lite'.

Do dromedaries still exist? Yes, just not in the numbers that our USN-philic thinking would have. Do supply depots exist? Yes, both fixed and temporary serviced by both IN assets and 'imperialized' shipping.

as for activating civilian auxilaries, it's a great peacetime business model. as a war effort it would be really unpleasant. admirals waiting weeks for logistical support to assemble, fleets jumping without support hoping the auxilaries catch up with them, lightly armed cargo ships blundering around looking for their fleets and hoping they don't run across enemy raiders, civilian captains thinking, "do I really want to find these guys?" I certainly wouldn't want to live it.
Traveller admirals live with it all the time. It's the 'FTL Comms Limited to Ship Speed' problem. It's normal for them. Dispatch any ship, military or supply, and the worry that it may never rejoin is automatic. Once an ship enters jump space, that's it. You hope it catches up and don't fret too much. Admirals dealt with the same problem for millennia prior to radio.

As for merchant captains getting deliberately lost, their vessels are not proceeding indpendently. They're escorted with the usual 'squadron jump' restrictions in place. What's more, they're not striclty merchant captains either. They're the 57th Century of the 'naval' or 'ready' reserve. They hold or held naval commissions and their crews are a mixture of civilian spacers and naval ratings. Look at the US Merchant Marine during WW2 for an example. Did any of those ships leave Bayonne, NJ and disappear only to arrive at Argentina?


Have fun,
Bill

(edited for format and spelling problems - WRC)
 
I'm reading this thread and thinking a bit out loud here. Take the ideas for what they are worth.

1) The logistics ships are roughly divided into two sizes, small and large, and two general types, dispersed structure container ship/battle riders and streamlined for fuel scooping dedicated ships.

2) The ships should be capable of J2 with enough fuel for 2 jumps or J4 and M1 in order to keep up with fleet movements.

3) We seem to be forgetting scout bases, which are mobilized in times of war by the Imperium. These can handle vessels up to 1000 tons IIRC and could act as minor logistical support.

4) With the above in mind, and an acknowledgement that subsidized merchants can be activated as naval auxiliaries by the Imperium in time of war, it seem that a job of the Imperial Naval Reserve would be logisics support and the operation of some of the smaller supply ships.

5) A typical Reserve ship would be a 1000 ton dispersed structure hull with cradles for holding smaller ships. Either SDBs for transport or as a "baby battle rider", shuttles for LASH operations and resupply, or scoopships/fuel shuttles for use as a tanker. Because these ships are small, they would operate from scout bases and primarily support the smaller fleet elements. The Xboat Tender itself may well be pressed into this roll with its large internal hanger/cargo bay (600 tons IIRC).

Does it make sense so far?
 
I don't see the Imperial Navy doing 'power projection' anymore and I think the oddly high number of IN bases is an indication of that.
that is certainly an option especially in inboard sectors and would explain the weak imperium presented in the little black books. but there's a problem with this. in a combat setting as wide open as the spinward marches with major hostile powers right on the boarder, power projection is not just an offensive operation. it's a necessary defensive operation as well. "best defense is a good offense" and all that.
Your last ship, Vinson, and mine, California, shared a base, NAS Alameda, that did not and could not provide every need of those vessels. There was no shoreside maintenance support, no fleet parking, sewage capacity wasn't enough, there were even no laundromats and yet both warships were homeported in Alameda.
yes, I remember many a cold dribbling shower in the dead of winter when shore steam was down and shore water was a trickle.

as you know, under the united states system many military "bases" are merely bait to persuade senators and representatives to vote for things. "vote for this, we'll put a bunch of free-spending squids in your district. money, jobs, you'll get reelected", etc. perhaps most of these imperial "bases" are political. treaty conditions for imperial membership, bribes by dukes, excuses for welfare disbursements, prestige points for local rulers, whatever. or maybe at one time they were frontier bases but are now mothballed (now THERE'S an adventure seed). maybe many of these bases are nothing more than class E facilities. this could explain their great number.

but if many of these bases are merely shells then the need for organic fleet logistical support is increased.
Traveller[/]i admirals live with it all the time. It's the 'FTL Comms Limited to Ship Speed' problem. It's normal for them. Dispatch any ship, military or supply, and the worry that it may never rejoin is automatic.
if the fleet has its own support then this problem is ameliorated. there's no need to dispatch it or escort it if it's already there.

I suppose another option is to describe the colonial fleets as base-bound, and the imperial fleets as carrying organic support. come to think of it that would make a lot of sense.
 
In Australia, many of our Air Force bases are basically maintained at low level, in Traveller terms an E class starport with a small caretaker force. Then when needed a number of supply craft arrive, bring the base up to operational level, say C class drop additional personnel and then the operational units arrive.

This strikes me as being how the smaller IN bases operate, possibly also the ISS bases undergo a similar "upgrade" in wartime.
 
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