Side view of the cargo ship Marla Duo, across the river at Gravendeel

side view cargo ship marla duo river gravendeel shipping vessel transport waterway freight logistics navigation maritime transporting port transportation cargo crossing sailing seaport river crossing shipyard onboard dock navigating bulk carrier cargo transportation water transport side profile shipping industry gravendeel river harbor importexport river navigation freighter shipping operations cargo vessel inland waterways maritime commerce loading and unloading berth barge transit vessel movement port facilities commercial shipping netherlands rotterdam area vessel marla duo