(a) The District Office is in Cleveland Ohio.

(b) The Ninth Coast Guard District comprise Michigan, New York north of latitude 42° N. and west of longitude 74°39′ W.; Pennsylvania north of latitude 41° and west of longitude 78°55′ W.; that part of Ohio and Indiana north of latitude 41° N.; that part of Illinois north of latitude 41° N. and east of longitude 90° W.; Wisconsin, except that part south of latitude 46°20′ N. and west of longitude 90° W.; and that part of Minnesota north of latitude 46°20′ N.