Travel by train / tram / bus:
The port of Scheveningen is 30 minutes by tram or bus from The Hague Central train station. From many large cities there is a direct train connection to The Hague. To plan your route exactly, you can use the website of 9292OV.
From train station The Hague you can travel by bus or tram to the ports of Scheveningen. For example, get off at the Duinstraat or the Visserhavenweg.