U-30 cut short her cruise with damage to the parapet on her conning tower , a missing radio aerial , and a broken gyrocompass .
U-30 arrived in Cattaro on 16 March for repairs .
Cutting short her cruise with damage to the parapet on her conning tower , a missing radio aerial , and a broken gyrocompass , U-30 arrived in Cattaro on 16 March for repairs .