If pressing the "R" key prioritizes torpedoes, which key should I press for ship

[riess]

If pressing R key selects closes hostile, but prioritizes the incoming torpedo, which key should I press to prioritize closest hostile ship instead?

 

I understand that torpedoes are big threat, especially when you are starting out, but most of times my ship is protected well enough for me to want to let my PDT's handle torpedoes for me, while I focus on removing hostile ships themselves. Lack of dedicated key for targetting hostile ships makes for really tiresome and focusing experience when running into fake distress calls or hostile systems.