An image formed in the mind of the dolphin Seaflight. He focused his formidable attention on it and saw three humans. He assumed the perspective of the one who was speaking. We will need a combination of antimatter torpedoes and free electron laser to cut the factory ship in half. The gama radiations bursts from the torpedoes will fry the crew unless we can get them all to assemble in the forward conference room.
Polypropylene is flammable as hell.
There is an outer layer of glazed ceramic which will protect us from any normal fire. An antimatter burst would vaporize it, of course. Seaflight assumed Mara's perspective. She walked to her neighborhood of the ship and went into her computer room. She spoke to the computer and asked the computer to change the ship from sailing to submarine mode.