Took a trip on the Wolfe Island Ferry (which is a very fine ferry) and got this view of the face of Royal Military College, Fort Henry and the Cedar Island Martello. Here are a couple of other posts on the martellos and the harbour defences.
The vista – too tiny to really see anything
Detail of the Cedar Island martello, unspruced, south of Fort Henry (green above)
Detail of Fort Henry (blue above)
Detail of Royal Military College behind Point Frederick martello, north of Fort Henry (red above)