Section 162.145 - Monroe Harbor, Mich(a) In the lake channel, no vessel greater than 40 feet in length may exceed 10 miles per hour.(b) In the river channel:(1) No vessel greater than 40 feet in length may exceed 6 miles per hour.(2) No vessel may use a towline exceeding 200 feet in length.CGD 79-151, 46 FR 7960, Jan. 26, 1981