You'd need a nuclear-level explosion to blow this ship up into small, practically movable pieces that aren't connected anymore. Everything on that ship is steel. Conventional explosions would just blow a few holes in it, and deform everything enough that moving things becomes impossible.
Yup, I get it. The energy released by a thermobaric weapon is spread out over a very, very large distance. Inside the blast, people will be killed and equipment will be rendered interoperable by the extreme temperature and the over pressure. Outside the blast you have a very strong (but subsonic) blast wave. But inside the blast, the pressure will envelope stuff, and push on it from both sides. With regards to blasting away a very large ship, thermobaric weapons are not particularly effective.
