I was in Larvik to pick up a group today, and as I was waiting for them, I took a stroll with the camera. Here I found a whaling cannon.
From Larvik museum page I copied this text:
"In the first half of the twentieth century, whale hunting was one of the most important industries in Vestfold. One in ten adults of working age was a whaler.
The Larvik shipping lines Christian Nielsen & Co. and Melsom & Melsom played a significant role, both in the development of whale hunting and in providing employment for thousands of men in the Larvik district."