Craig Patrick Yeowart (38) and Darren Paul Maidment (35), both from Liverpool, were due to appear in the Magistrates Court.
The find was made during a routine check, following the arrival of the Commodore Clipper from Portsmouth on Saturday.
During a search of a UK-registered vehicle, a compartment containing roughly 1.2 kilos of suspected cocaine was discovered, with an estimated street value of £150,000 to £180,000.
