To be honest navys in modern times still serve a couple of purposes. One of which is transport, if we look at the falklands war for example the majority of British troops where transported to the combat area in the south atlantic using a combination of naval vessels along with some cruise and passenger ships requisitioned by the Thatcher government of the time. Further to this during the falklands war the British set up an 'Exclusion Zone' around the Falkland islands this in practical terms consisted of what is most easily described as a ring of British naval vessels providing area defence authorised to engage Argentine flagged vessel on sight making certain areas surrounding the Island a no go area for the Argntinian forces. This question is a quite difficult one to answer because really a definitive answer can't be reached without knowing who you are fighting and were.

Taupe glorious Taupe

I live in a place that is practically in newcastle and then I'm at uni in Manchester

To be honest navys in modern times still serve a couple of purposes. One of which is transport, if we look at the falklands war for example the majority of British troops where transported to the combat area in the south atlantic using a combination of naval vessels along with some cruise and passenger ships requisitioned by the Thatcher government of the time. Further to this during the falklands war the British set up an 'Exclusion Zone' around the Falkland islands this in practical terms consisted of what is most easily described as a ring of British naval vessels providing area defence authorised to engage Argentine flagged vessel on sight making certain areas surrounding the Island a no go area for the Argntinian forces. This question is a quite difficult one to answer because really a definitive answer can't be reached without knowing who you are fighting and were.