About 1,900 members of the Unite union at Felixstowe in Suffolk are walking out for eight days during a dispute over pay.
Unite aforesaid members rejected a seven-membered pay supply from the Felixstowe Dock and Railway Company, that it aforesaid was below the speed of inflation.
A port representative aforesaid the strike was “disappointing”.
A line shaped too soon Sunday because the strike began, and also the union said it might be manned till 22:00 on day after day of the walkout.
Miles Hubbard, from Unite’s regional workplace, told BBC: “Very few folks reported for work this morning.
“The line has been in place since 6am and we’re obtaining nice support from the general public.”