Xbee in an aluminum engine room?

I am hoping to install some xbee mesh stuff on my aluminum boat. The boat is mostly 6mm aluminum plate and some of the devices would be in the engine room, which is basically a 4x5x2m box with 4 large diesel engines inside.

Is there any chance xbee devices in the engine room would be able to transmit to an xbee at the helm, which is about 10m away ??

That would greatly depend on how tight the box is as you are effectively building a Faraday cage. As such, I would not expect it to get outside of the enclosure.