I don't see any picket boats maintaining a defensive perimeter around that modern warship--unlike in the USA.
Halifax harbor looks like its skyline is getting taller. I was last there in 1997. At that time there was a very old, very small Corvette-class c.1930 ship open for visiting. I thought: Oh man, I would not want to be in a North Atlantic storm in this little ship. They were used as convoy escorts in World War Two.
The HMCS ST. JOHN'S looks very impressive.
The Canadian Coast Guard, which is not part of Canadian Forces and not a military organization, has some rather big ships on the Great Lakes. Here is one I came across in Sarnia a few years ago:

- Fig. 2. Canadian Coast Guard ship PRIVATE ROBERTSON V.C. as seen in Sarnia, Ontario, October 2014.
- PRIVATE_ROBERTSON V.C.jpg (114.63 KiB) Viewed 4846 times
The
CCGS PRIVATE ROBERTSON V.C. was the first ship of the 140-foot Hero-class patrol vessels. The "V.C" in the ship name refers to the ship's namesake, Canadian Infantry Private James Peter Robinson, who was posthumously awarded the (British) Victoria Cross in 1918 for heroic action in World War I.
I was most impressed with the array of radio antennas on that tall mast. I am not sure what it will be patrolling for on the Great Lakes, maybe poachers from the USA coming across the border to fish in Canadian water.