German brokerage Peter Gast Shipping is perhaps best known for its annual yacht regatta, but its traditional harbour tour that marks the end of the SMM trade fair has a growing legion of fans.

Around 200 guests last week enjoyed a relaxing dinner cruise through the heart of the port with its enormous docks, terminals and giant containerships.

Sailing away on the riverboat MV Hamburg with the stunning Elbphilharmonie concert hall in the background, guests enjoyed...