Search the Blarg Warship for weapons is an optional mission in Ratchet & Clank, taking place in the Blarg Tactical Research Station within Nebula G34. Upon searching a blarg weapons transport warship, Ratchet and Clank found a Predator Launcher, though touching it triggered the warship's self-destruct sequence, forcing the two to quickly evacuate.
Upon arriving on the Blarg Tactical Research Station, use the Gadgetron vendor to purchase any raritanium upgrades, weapons, and refill your ammo. From where your ship lands, head to the right and take the door on the right, opposite the door opened by an Invinco-Lock that leads to "Find the top secret Blarg research project", and instead take a door that leads to a shuttle. Board the shuttle to travel to the weapons transport.
On this ship, you will notice it is slanted, making it difficult to move. Head through the door marked by yellow and black stripes, and it will automatically open as you approach, revealing a blarg commander as your first enemy. There are then two doors you can take, though both take you forward and both contain a blarg space commando, an enemy which blasts a laser on the floor that then creates fire traveling outwards in an arc. Dodge it and shoot them, then move onwards to a room with more space commandos. Following this room is the command bridge, occupied by a blarg commander and a blarg trooper. Defeat these enemies and break the glass containing the Predator Launcher, then press to retrieve it. This will begin a self-destruct sequence, giving you only 40 seconds to escape the ship.
Immediately return the way you came and head towards the shuttle you arrived in. The Predator Launcher will be automatically equipped, and can be fired against the four blarg troopers that try to block your escape. Feel free to fire, though prioritize escaping the ship safely (it is recommended to summon Mr. Zurkon to also shoot down enemies in your way). In the room containing your shuttle, two blarg commanders appear. Only defeat them if you are confident enough you can kill them before the countdown expires. Board the shuttle and you will complete the mission.