PENZANCE For Refit – The Sandown Class Minecountermeasure vessel PENZANCE is now at Babcock/Rosyth to undergo a multi-million-pound revamp.    The ship will be out of action for five months and when the ship emerges among other upgrades, the PENZANCE will be the first Sandown class with an enhanced 30mm cannon.     The ship enters refit just weeks after the sistership GRIMSBY emerged from the same yard.    After trials and training post refit the PENZANCE is due in the Autumn 2013 is to join a NATO force.