Wim van Sluis was Chairman of Nederland Maritiem Land (Maritime by Holland) and a supervisory board member of Dura Vermeer.
He spoke at four Mare Forum events between 2015 and 2018, including the 1st Mare Forum Singapore, the 2nd Mare Forum Commodities Transportation (where he gave the keynote), the 18th Mare Forum Greece and the 1st Rotterdam & Athens-Piraeus Shipping Meeting.