So, I was sitting around, thinking of a group finding something like the Light of Terra , and knowing that, more than likely, if a party could find a way of keeping it, and not having Roth blind-jump it off, into oblivion, the Navy would eventually come along, and remind them that the ship is navy-property, and that they can take it for nothing (they are a bit too powerful to let PCs have, and all). Now say, on the other hand, you had the location, made sure that the ship WOULDN'T be going anywhere, and realized that refitting it would be a mammoth undertaking, beyond all but the wealthiest Dynasties, so you decided to contact the Navy, and tell them where their ship is. Now, they can't just pay you what the ship is worth, as that would bankrupt one or more worlds, but lets say they actually decided NOT to play the "tell us where it is, and don't interfere!" card, and they wanted to reimburse the Dynasty for their gallantry, in straight divulging this info to them. What's a good reward?

Now, as for me, I might imaging that they could give the Dynasty a planet. Say the Inquisition, or the Navy/Guard, had to put down a rebellion, and now the planet is in need of a new Governor. This duty could be overtaken by the Dynasty, with one of their agents taking up the mantle of Governor, administering the planet, and paying all of the usual tithes. In my example, it would probably be an agri-world, where the Dynasty pays the food-tithe, and then can use the surplus to supply any of their own other interests/assets, and sell the rest beyond the tithe. They are seemingly simple to run, with little chance of problems, and a decent way to earn some side-money. Would some other type f planet be more likely? More suitable?

If this seems silly, then what other sort of reward might they expect? A battleship is a nigh-priceless thing to be handing over to the Imperium, and any decent Rogue Trader would expect something pretty spendy back, at least APPROACHING the value of the ship to the Navy, or they could just let it jump, after looting it, and flip the Navy the aquilla. I know this is the grim, dark future, and the Imperium is mostly run by tight-fisted, ruthless pricks, who would give the party nothing beyond their lives for simply "doing what the Emperor expected of you", but every so often, it is nice to have something show a glimpse of that there is a reason the Imperium SHOULD survive to see another day dawn.

my players actualy did that. in return they got peer and good reputation with battlefleet calix for free and got a adress(or what ever you call it) to a astropath that they could use once, and only once if they needed help and then the fleet would come as quickly as it could.

THere are a number of things they could get out of it, depending on how generous the Navy was feeling and how well your players get of their good side (other than handing over a priceless relic). Probablythe most powerful thing they could get would, of course, be a Favour To Be Reimbursed Later. Good reputation is a must, of course. One of the biggest rewards would probably be naming rights to the hulk.

My personal set of rewards for them though would probably be opening up endeavours for the Imperial Navy personally, and allowing them to deal with the local Grand Admiral personally. Give a man a fish, and he'll feed himself for a day. Show a man to fish, and he'll open up a dozen new trade routes, shipping high-intensity plasma macrocannon through a turbulent region of space to a far more profitable buyer who, compared to most other buyers for such things, has a virtually unlimited budget and a very real reason to want to buy at a premium rate from you in case your travels through said turbulent space uncover another battleship.

My players returned the ship. I gave them all Peer and Good Reputation (Imperial Navy) as well as 2 cruisers from the reserve fleet. They also received the services of a corvette squadron for 101 years to help protect their holdings in the Calaxis sector. I think I'm going to have them escort the ship back to Mars as well, and potentially receive recognition from the High Lords of Terra.

Of course, this is just scratching the surface of what could be deemed an appropriate reward.

The handing over of the coordinates of such a valuable prize would be an endeavor in itself. You'd have to prove to the Navy that you're not making it up, without showing them the actual location of the ship. If you did, there'll always be someone ruthless enough to take advantage of that (i.e. you're not getting paid). And because it is that valuable, payment can never be direct (no organization has enough liquid assets to properly compensate the Rogue Trader). However, payment will probably be in lucrative military contracts.

I would take all this and make a greater endeavor out of it with the following objectives: 1. Convince the navy that it's real. 2. Negotiate a deal. 3. Implement the military contract (e.g. organize a trade route). 4. Repeat step 3 for as many times as the Rogue Trader has managed to negotiate in step 2.

The total profit gained from this endeavor would probably around 8 PF, depending on how successful step 2 was. Together with this I would also grant Peer(Navy) and/or Good Reputation(Navy).

Uh, I'm gonna sound like such a goober here, for asking, but I'll risk it. So, a common reward could be giving the RT (I assume it's that one character, and not all 4-7 PCs, but I suppose each deserves rewards) Peer and Good Rep with the Navy. While this seems very nice, and all, I am not completely certain how helpful it is, so some elaboration would be good. You get +20 to Fel checks with the Navy, but other than Inquiry (I can rather imaging making numerous Inquiry checks with my "buds" in the navy, to find out all kinds of useful things), how often will you be making such checks with people you get along with. If they were trying to Acquire from the Navy, could they use that bonus on their Commerce skill, to boost their PF, and/or the potential Barter checks involved? Blather and Charm don't seem quite as likely, when you like these people, and Command...the Navy will tell you how far you can command them. While dodging the thrown table for saying "Ascension" on these boards, I saw a use there, because having Good Rep gave you a +20 bonus to your Influence checks with said group, but having a +20 to Acquisition checks, for any reason, is laughable, and besides, RAW doesn't say that, like Ascension does.

So, with me looking dumb, please explain a bit, maybe with an example or two, how these two Talents help, making them worth the battleship you couldn't have kept anyway? Thanks much.

In my game Peer and Good Rep both represent a good bit more than the mechanics. It represents exactly what the title of the talent says, being a Peer (aka, considered a Navy Captain or Commodore or Equivalent, or having a Good Reputation with the Navy). This allows all sorts of minor but nice things to happen. For instance, calling for navy Support and actually getting it, using Navy Facilities for refit or resupply. Being called upon by the Navy to assist them as well.

As a GM there are all sorts of incidental bits you can add to social mechanics that just make the story that much better. My group has had fairly close ties to the Navy the entire game and receiving the talents for the Dynasty (note, not the players, the Dynasty has these two talents) meant more to them than getting the two cruisers. They're working hard to maintain these relationships and it's causing a bit of discomfort as they can't just go off and ignore obligations that they've created for themselves.