As do yours. What is Stanflex? Adding a container, no? You make a big deal out of that, stating the Danish ships can upgrade their armament with it. So, what hair exactly are you trying to split? "Has a large calliber gun?" Woohoo. Tell me precisely what criteria you mean. The 7 armed Danish patrol ships break ice. So do the Arctic Security Cutters. The 7 armed Danish ships have containerized optional weapons. So will the Arctic Security Cutters. I then consider my statement correct unless you can clarify whatever it is you are trying to get at.
You're right..."Adding a container can be done to many ships. In that way some countries have dozens to hundreds "armed patrol ships with ice-breaking capabilities"." So, what's your point?

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I would still consider my statement correct.
Adding a container can be done to many ships. In that way some countries have dozens to hundreds "armed patrol ships with ice-breaking capabilities".