The 75-foot-long deck moulding is being escorted by police as it travels on some of the region's busiest routes.
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The load is being transported from Oyster Yachts in Ashmanhaugh near Hoveton to Poole in Dorset.
The 16-foot-wide unit will be escorted in a convoy via the A1151, A149, B1152, A1064, A47, A11 and A14 before being handed over to police in Cambridgeshire.
The load will hit roads at 10am on Monday and drivers have been warned to expect delays.
The 75-foot-long deck moulding is being escorted by police as it travels on some of the region's busiest routes.