I have found that in Version .91 that boarding parties will board ships with self destruct devices intact. This will then blow both ships up. It works in Stratigic mode as well as Tactical and Auto turns during Tactical. I believe this was not the case in earlier Versions. Before the boarding parties would not board if a self destruct device was in the enemy ship unless you forced it to in tactical combat. I have not seen this reported before.
It was great taking out those battleships with an equal number of light crusiers though.