Ludvig Martin son of Ludvig & Ingeborg

Hi & Happy New Year to all I have been trying to find details of my gggrandfather Ludvig Martin who was supposedly on the ship Swiftsure that arrived in New Zealand in 1865 from ? location. He was abt 19-21 years old in 1865 but cannot find where in Denmark he left from. His parents obviously remained in Denmark but cannot find them in the 1865 census Any pointers in the correct direction would be greatly appreciated Regards Darlene in Australia