The Roseway Basin—approximately 30 nautical miles south of Nova Scotia—is an important socialization and feeding area for right whales. Large numbers of whales congregate here every summer and fall, where they feed and interact at or near the surface of the ocean.

We collaborated with Dalhousie University and Transport Canada to create the proposed Roseway Basin Area to be Avoided. By applying GIS technology to historic whale sightings, vessel routing patterns and vessel speed analysis we were able to calculate the potential risk for whale-ship collisions. These data provided a scientific justification for our proposal and were used to determine the boundary for the Area to be Avoided.

Our efforts were a success and the proposal was approved in October 2007. The Roseway Basin Area to be Avoided is in effect seasonally, from June 1 to December 31.