Every vessel equipped with fenders that are not permanently attached shall raise its fenders when passing a lock gate in Snell or Eisenhower Locks.
33 C.F.R. §401.39-1
68 Stat. 93-96, 33 U.S.C. 981-990 , as amended and secs. 4 , 5 , 6 , 7 , 8 , 12 and 13 of sec. 2 of Pub. L. 95-474 , 92 Stat. 1471