On picture 7—I believe this is the one you are referring to—what you see is not a harpoon but rather a water cannon. The effect, however, is exactly the same. In the series of photos you see, the Farley Mowat is going directly for the fishing vessel from Cape Breton, Nova Scotia, and is just about to deploy the water cannon on the fishers.
However, there are some things even more dangerous than water cannons. You will see a series of pictures of small boats. In picture 10, at the very left, for example, to the left of the yellow arrow, you can see the Farley Mowat. A few seconds before that, the fishers were on the ice, while the boat was getting closer. That is clearly within the half-mile. It is really quite close. I was onboard the patrol boat that day and we played cat and mouse all afternoon to avoid taking damage from that boat. We then stopped the boat. Of course, all the rules, agreements and approvals from senior management gave us the authority to end this violation. The ship was therefore stopped. I was the first to board the Farley Mowat to arrest the crew. They were led aboard our ship, that is the icebreaker. The Farley Mowat was towed to the wharf in Sydney. Charges were laid in the following days. The fishers' lives were indeed in danger that time.
As you can see on the picture, there are two fishing vessels, a red one and a blue one, which are the same size, about 45 feet. The people on these boats said that they were truly scared that day. Some told us that the Farley Mowat had brushed their stabilizer. Stabilizers are those long arms that are deployed on each side of a ship to stabilize it. The Farley Mowat had missed the stabilizer by a few centimetres. These people were scared. They were truly happy to have us there that day to put an end to that violation and allow them to see to their business and to earn a living.