46 C.F.R. § 98.33-9
Stowage
Each portable tank or IBC authorized under § 98.33-5 of this part must be secured to the vessel by devices of sufficient strength and number to prevent the tank from moving in any direction during transport.
Each portable tank or IBC authorized under § 98.33-5 of this part must be secured to the vessel by devices of sufficient strength and number to prevent the tank from moving in any direction during transport.