46 C.F.R. §140.915
Note to §140.915. For towing vessels subject to 46 U.S.C. 11301 , there are statutory requirements in that U.S. Code section for additional items that must be entered in the official logbook. Regarding requirements outside this subchapter, such as requirements in 33 CFR 151.25 to make entries in an oil record book, §140.915 does not change those requirements.