Space combat game with standard deck of cards
Sounds like it could be InterPlaNet War by John Buenavides. His description:


  54 cards. The deck will have markings on the corners equivalent to a
  standard deck of playing cards. Each player takes a suit to represent
  his army: Martians (Spades), Terrans (Diamonds), Jovians (Clubs), or
  Venusians (Hearts). One card will represent your home Colony, the
  other 12 cards represent your Cohorts -- your combat units


And looking at the pics, the face cards are indeed marked as ships. And some of the cards reference torpedoes.

Here's his post on the BGG forums back in 2012. The links he provides to PnP files are all google drive links, though, which seem to be private now.