The hulls were built out of wood for significantly reduced magnetic signature.

This has the effect of "resetting" the ship's magnetic signature.

The ridge is associated with complicated gravity and magnetic signatures.

The ships use wooden hulls to reduce their magnetic signature.

"I do not detect a change in the object's magnetic signature."

Foundations and walls may also have a magnetic or electrical signature.

The magnetic signature is reduced by the presence of a demagnetisation belt.

She was also able to use this matter offensively, in the form of energy blasts, and to read magnetic signatures.

"How's the magnetic signature of our shields holding out?"

Every bit of metal shows a magnetic signature to some degree or other.