Thousands had died during the harsh Crimean winter of 1854/55, but the besieged Russian naval base of Sebastopol was still holding out. Commander Phillip Hazard of HMS Huntress had been ordered to sound and buoy a channel to ensure safe passage for the Allied squadron which was on its way to force entry into the landlocked Sea of Azoff. Hazard knew he would have to face treacherous sandbanks, Russian gun batteries and floating bombs, but he didn't know he'd have to face a court martial as well .. .