  This paper is devoted to the study of hyperbolic systems of linear partial
differential equations perturbed by a Brownian motion. The existence and
uniqueness of solutions are proved by an energy method. The specific features
of this class of stochastic partial differential equations are highlighted and
the comparison with standard existence results for SPDEs is discussed. The
small perturbations problem is studied and a large deviation principle is
stated. A pathwise approximation result, similar to the stochastic differential
equations case, is established, with an application to a support theorem.
