The emergency plans in the area of responsibility of CECA make use of several marine resources.  To be of value to your ARES group you should hold a Restricted (Marine) Certificate.  The website below provides an opportunity to acquire the certificate. If this course doesn’t work into your plans check the second site noted below

http://www.boatingcourses.ca/courses/maritime-radio/452

http://www.boatingcourses.ca/course-descriptions/maritime-radio-0