Phil, your use and spelling of the word ‘landligger’ is correct, and these boats where much used for traveling during summer holidays. The term ‘Papa-boat’ was also used on the Oslo-area because the father was still working when the rest of the family was on a holiday. on Friday he (the papa) used the ‘papa-boat’ to get back to his family and stayed for the weekend.
I see that you want a new name on your ship. Very often this boats were named after places, fjords, sounds or other geographical names from the area it was operating. If you want a typical Norwegian name on your ship, use google maps or something similar and you will get a lot of suggestions.