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The speed of light and jump drives.

parmasson

SOC-14 1K
I am an Imperial navy captain. I know that a very important starship was captured at this location less than 24 hours before my arrival.

Can I jump out about nine light days and train my telescopes and sensors on the area I know the battle will take place and “see” the battle as it unfolds in the past? If I can it could be a great anti-piracy tool. You can capture an Image and passive senor logs of the ship after the event but in “real time”.
 
I think so, Kurega. I need to check this, but I want to say the Imperium was doing some very long ranfe spying on the Zhodani using this method, so it goes to figure that it would work for a closer range as well.
 
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Cool idea. I think I may use some variation of it.
 
Isn't the maximum range for merely detecting a ship 3 light seconds? My gut feeling is that you, as an IN captain, do not carry around powerful enough sensors to get clear video footage from 259,200 times that distance.

Maybe there are specialized ships that can do it. More likely the IN has scattered very passive security recorders in far orbits outside as many systems as possible, or better, disguised them as civilian sattelites around this planet or that gas giant.
 
Here is the thing, a telescope or future equivalent might be able to. Call it a passive photon imaging and collection array. It will need to be deployed to be sure as it is presumably very large but it should be possible. The three second rule cannot apply to light. It just can’t. If it did then no stars would be visible as eith light, x-ray, or IR. Those starship lasers will have one hell of signal in their spectrum.
 
Originally posted by Kurega Gikur:
Here is the thing, a telescope or future equivalent might be able to. Call it a passive photon imaging and collection array. It will need to be deployed to be sure as it is presumably very large but it should be possible. The three second rule cannot apply to light. It just can’t. If it did then no stars would be visible as eith light, x-ray, or IR. Those starship lasers will have one hell of signal in their spectrum.
Unfortunately for the IN Captain, the signature from the lasers will not be distinctive to the ship - You may be able to pick up that the battle occured - but you already knew that.

If you must catch the players I'd recommend either an ejected data recorder (black box) that the PCs missed or some other conclusive forensic evidence. It's highly unlikely that you could do a hit and run on a major vessel without leaving some sort of clues behind. Or how about that lone astroid miner that's got a severe hatred of pirates and is willing to hide out until the IN shows up? Or maybe even just a IN Captain with a strong suspicion and a willingness to use the long distance real time spying as a ruse to get a reaction?

Lots of different opportunities for role playing and learning that making the hit on a major line's vessel is the easy part - surving the aftermath/chase is the real chore.
 
Issues I have to deal with:
They have a kick ass sensor suite on board. Military style stuff.
Tricked out computer
The good sense to physically account for all that stuff black box stuff.

Their issues
A really tricked out ship with the low rider package.
The inability to pass up a sweet target like this.

Here is what happened. Their ship looks like a 200 ton far trader. Right. It has a 6G acceleration, hull armor and two triple turrets. One of their favorite weapons are EMP missiles purchased from the mob on the black market. (It is a long story. The campaign is almost two years old playing weekly.)

They lie in wait for weeks to take THIS ship (4000 ton Super freighter in a small ship universe). They wait until the right time and BAMO. The freighter fires off a few shots and so do they. They are on board fast enough and give the crew the option of fighting or taking the lifeboat. The crew abandons ship and the PCs take over with a prize crew. They come complete with a computer expert who is a retired Tureka station manager. Well they get the ship and jump out to an empty hex. There it sits.

I want to put the fear of god into them. The 41st Independent Squadron is on patrol in the area. They arrive too late to help but know what must have happened. They send a sensor ship out to “capture” the action. Now they will know a 200 ton far trader with really kick ass engines and armed to the teeth (for a 200 ton ship) did the deed and it had hull markings that look like this.

Of course they will change the markings but I want them to have to run and perhaps get caught. The point is to give them a real challenge with out making failure assured. I am anxious to find out what they will do. All four guys are quite creative and it will be really cool to hear their solution.

Hey Jame, if you read this does the 41st have Q ships? If so what class? I will fill in the details.

I was thinking of a 600 ton Subsidized Liner with 1 visible turret, 5 pop-up turrets, two 10 ton PAW bays (hidden), and an assault cutter. It would have an extra G of accl with hull armor as well.
 
Some simple detective work would also supply the answers the IN needs as well. When was the last time the ship was in port? Have they made any stops at other ports in the area? where did they buy spare parts for their ship? Has anyone done a close visual inspection of the ship in the last 4 or 5 stops?

Since the player's didn't kill the crew, the crew (and now the IN) will have vague descriptions of the players and their ship. Within a few weeks every port in the sector is going to be looking for a heavily armed small ship. With a crew matching the size, number and vague description of the players. The Navy will start searching all the possible locations where the ship could be. Don't forget the IN has jump-6 couriers. They can out-run the players.

First thing I would do is make sure the players know the IN is on high alert, in every system they go into, looking for their prize and some "pirates". Have some TNS news items about interviews with IN captains using phases like "blow these dirty pirates from space" and "radioactive space dust is all that will be left when we get done with them."

If the players get loose lipped at the wrong time, an overzelous starport employee looking for a promotion may tip off the athorities of their activities. Queue the standard running gun battle to get back to the ship and a quick blast out of starport chased by IN forces.
 
Ah, back to the old piracy IYTU theme. Even without the sensors to pick up a battle nine light-days away the relatively small number of starports makes watching for the suspects fairly easy.

It isn't like piracy in the Caribbean where any cove is an anchorage and wooden ships can be repaired by the crew with local raw resources.
 
1) Yes, the concept is possible.

2) Genjuro, the limit on detecting a ship is due to not knowing exactly where to look.

3) Having said that, you have the same problem with light as with any other sensor: the inverse-square rule. Assuming full luminosity at 1 light-second, that means the available light at 9 light-days will be 0.0001286% of what was generated.

4) You players have been very bad and should be punished. And, I don't think you have to resort to this to do so. (See above suggestions....
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Hi !

The idea is just cool.
Unfortunatelly it is practically impossible to get any kind of detailed image at those distances, especially in the visible light range.
Its closely related to the problem with the Traveller laser range.
Of course you theoretically could set up a detection array, but the afford would be gigantic.
1500 AU is just too far away.

Now, what could be done is to catch a broadcasted signal of the ship in distress. This signal could contain digitized sensor and log data, about the attack and the attacker itself.
IMTU it is typical, that ships start to broadcast such data just for security purpose if they feel some kind of threat or experience a unsafe situation.
It like shouting out: "Hey folks, something is perhaps going on here..".
This perhaps prevents quite a few people from doing criminal things.

"F..., he's already on sec broadcast, with some awful data chunks of our ship.
Send a message, we have commo problems here and wish a pretty travel. Set a standard passing flight path.
We have to fix the damned jamming system as soon as possible."

So it needs a professional skill to somehow take out such broadcasts or distress signaling.

Of course "real" pirates would not care about that ... it maybe just makes them angry.
 
Originally posted by Fritz88:
2) Genjuro, the limit on detecting a ship is due to not knowing exactly where to look.
It assumes you've already detected it and are tracking it, so it does include knowing where to look. Which isn't to say that the ship can't see anything beyond 3 light seconds, but rather to give an impression of the limited abilities of even the military sensor arrays.
 
by Fritz88
Assuming full luminosity at 1 light-second, that means the available light at 9 light-days will be 0.0001286% of what was generated.
Yeah that is a bit much. I just thought I would have been cool to have them see their ship on the news in the act! I will resort to a SDB or small freighter that got a look at them.
 
Originally posted by Kurega Gikur:
Issues I have to deal with:
They have a kick ass sensor suite on board. Military style stuff.
Tricked out computer
The good sense to physically account for all that stuff black box stuff.

Their issues
A really tricked out ship with the low rider package.
The inability to pass up a sweet target like this.

Here is what happened. Their ship looks like a 200 ton far trader. Right. It has a 6G acceleration, hull armor and two triple turrets. One of their favorite weapons are EMP missiles purchased from the mob on the black market. (It is a long story. The campaign is almost two years old playing weekly.)

They lie in wait for weeks to take THIS ship (4000 ton Super freighter in a small ship universe). They wait until the right time and BAMO. The freighter fires off a few shots and so do they. They are on board fast enough and give the crew the option of fighting or taking the lifeboat.
Just to add my .02 credits to this all...

As a rule, high-end criminals are smarter than the guys who investigating them. However, most of these criminals are caught because there's a lot more of these "dumber" investigators, they have more resources, and they have more time to comb over places and find the tiniest details.

I don't think military starship sensors would have the sensitivity to pick up events in any detail from a distance measured in light-days. They most likely have excellent sensors, but they're not adapted for that kind of profiling (probably from lack of baseline size).

However, there might be people with sensor arrays that sensitive in the area. Perhaps like a deep-space observatory array from a nearby system's university? If the incident occured near a national border perhaps there might be a military deep-space listening post eavesdropping across the border? A secret Longbow collector station that could be retasked for 15 minutes on a given day to collect info?

While visible light might not be detectable, perhaps there are other "fingerprint" signals unique to starships (similar to the screw noises on submarines). Perhaps each fusion reactor has a unique radiation profile?

Certainly a 6G manuver drive on a Free Trader would be more than a little unusual. Perhaps the radiation spectrograph from that could be read from afar (even if it wasn't ever operated at full power). Not to mention if they ever used that 6G during the encounter, the Navy would know it's a "sleeper" ship - a 6G maneuver array (I don't know if you're using jets or thrust plates or whatever) would probably have a pretty big footprint on the hull of their ship - obvious on visual inspection for anyone who knows what to look for.

If such devices have a distinctive "footprint" the Navy might not just have general details, they might know exactly what ship to look for.

In addition, the major weakness of such modified vessels (you may replace "modified" with "tricked out", "tweaked", "blinged", "riced", or whatever) is that they often have a need for special repair parts:

* The Navy might start making enquiries on people who've bought repair parts for a 6G maneuver system in the last five years or something. It's even easier if the players are dumb enough to bring their ship in for repairs.

* Illegally purchased EMP missiles? This is intriguing. Exactly how common are these missiles? Are they deep-black military tech or somewhat common? I assume they're military only if they had to buy them from criminals. Even if the players are careful to cover their tracks, perhaps the MoJ or INI got a break on the EMP missile thieves. With the proper coercion, they confessed about who they sold the missiles to. In turn, the mob might make a deal (especially with the INI) to give descriptiosn of who actually bought the missiles.
 
“Illegally purchased EMP missiles? This is intriguing. Exactly how common are these missiles? Are they deep-black military tech or somewhat common?”

IMTU TL-12 EMPs are a considered a defensive weapon. Normally they are used as anti-missile things. IN ships are hardened to that kind of stuff so they are not concerned.

As for the 6G engines . . .that is not all

They also have hull armor, and two triple turrets.

It is less a trader than a gunboat. It is going to become hot for them very soon I fear. Not fusion hot but a nice steady combustion just to keep things interesting.
 
My views would be to know that a battle had just ended will go unknown unless another vessel was close by.
in the first post which was 9 light years away it would therefore take 9 years till the GK arrived to his ships current position.
Secondly Jump Space is as i know takes about a week no matter the distance being travellered and the time framed would be the same as when they went into J-Space.

Now, what could be done is to catch a broadcasted signal of the ship in distress. This signal could contain digitized sensor and log data, about the attack and the attacker itself.
IMTU it is typical, that ships start to broadcast such data just for security purpose if they feel some kind of threat or experience a unsafe situation.
It like shouting out: "Hey folks, something is perhaps going on here..".
This perhaps prevents quite a few people from doing criminal things.

"F..., he's already on sec broadcast, with some awful data chunks of our ship.
Send a message, we have commo problems here and wish a pretty travel. Set a standard passing flight path.
We have to fix the damned jamming system as soon as possible."

So it needs a professional skill to somehow take out such broadcasts or distress signaling.

Of course "real" pirates would not care about that ... it maybe just makes them angry.

you could target the Power Plant or the Computers depending on how the ship is wired.
 
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