"Fight on my crewmen, my brothers! Even now the enemy is being driven from our hallowed decks. We have been battered, but are not beaten, not by any means! So fight on! We will not be defeated by pirate scum! They come to kill us, to steal our livelihood and enslave our families, but it shall not be so! Fight on, my comrades, fight on!"
After voxing my message to inspire the crew, I activate the ship's vox to hail the bridge of the Vulture.
"This is Lord Captain Antonias Dragmar of the Rogue Trader vessel the Tiamat to whoever leads this pirate rabble. Your ship is badly damaged and a third of your crew is slain. Your boarding party has made no headway, and it only a matter of time before they are crushed like the roaches they are. Conversely, we have taken only minor damage and few losses. Even with your ally, you cannot win this fight. Even if, by some miracle, you were to survive and escape, what would you be but easy prey for the next opponent to run across you, perhaps even the Ignominious Flight. It is said, after all, that there is no honor among thieves. Food for thought, pirate."
What characteristic should I use for the intimidate skill in this situation, because the book says that you use intelligence or fellowship in place of the basic strength when you are coercing your target in some other way than via physical intimidation. I'm not trying to scare them by being bigger and stronger, I'm pointing out that my ship is bigger and stronger, so what do you want me to roll against?