This is a five-page report showing the standard allowance of ordnance, arms, etc. on a 110-foot subchaser, filled out for subchaser SC 354 in September 1918.
One interesting bit of information is that at this time, September of 1918, SC 93 had two Lewis machine guns, which had evidently replaced the more common Colt machine guns.
For an example of a Colt machine gun on a chaser, see this photo of the bridge wing on SC 254.
For an example of a Lewis gun on a chaser, see the photo of the bridge wing on SC 45 (second photo on that page).