Wash. Rev. Code § 38.38.420
(4) A duly authenticated deposition taken upon reasonable notice to the other parties, so far as otherwise admissible under the rules of evidence, may be read in evidence or, in the case of audiotape, videotape, or similar material, may be played in evidence before any court-martial or in any proceeding before a court of inquiry, if it appears:
[ 1989 c 48 s 47; 1963 c 220 s 51.]