Thanks, Art et al. I was looking into the possibility that when the Confederate submarine sank the Union ship Housatonic in 1864, the "blue light" which was reportedly seen by one of the Housatonic's crewmen could have been coming from one of the ship's lifeboats. Don't know how many boats she would have been carrying; at least three were reported as being recovered by the rescuing vessels. "Blue light" was standard distress signal and would have been handy aboard the ship, but not sure if it was stocked on the ship's boats. The ship went down in about five minutes, and there may have not been time for the crew to bring blue lights from elsewhere in the ship to use in the boats. Some feel that the blue light was displayed by the Hunley to signify a successful mission, and others don't accept that explanation, so I was looking for an alternate source of the blue light. I appreciate your input.

Chris