Just two years later, in 1903, the family moves again, this time to premises in Waterstraat, where there is also an office. A wide range of commercial activities are gradually developed which include trading in coal that is "delivered directly from ship to home". Egbert continues the expansion of the fleet and he also buys a number of pontons for use as floating coal stores in order to keep pace with the huge demand for bunker coal. During that year the shipyard Niestern, now established in Farmsum, delivers the transport barge "Concurrent". By the end of the year Concurrent is joined by the steel, single-mast tjalk "Concurrent II", weighing about 90 tons. Egbert also buys the steam tug "Jo". At the turn of the century Delfzijl has a large fleet of tugboats assisting the oceangoing ships in the harbour. In the meantime, Delfzijl has also become a significant port for saltpeter, which is mostly shipped from Chile.