Watch: Port Of Rotterdam Authority Abandons Normal Amsterdam Water Level (NAP) After 200 Years

The Normal Amsterdam Water Level (NAP) has been used as the basis for Vessel Traffic Services in the port of Rotterdam for some 200 years. On 1 July, the Port of Rotterdam Authority will abandon NAP in shipping communication. From that day, it will use the Approximate Lowest Astronomical Tide (ALAT) as a reference for water depths and water levels in the admission policy. Internationally, this reference is common practice in shipping.

Video Credits: Port Of Rotterdam/Youtube

“The adjustment is in line with the Port Authority’s aim to come to a high degree of international standardisation, as this is a major condition for digitising Vessel Traffic Services,” says René de Vries (State) Harbour Master of Rotterdam.

More efficiency and safety

LAT is the lowest tide level forecast under astronomic conditions. The new reference came about in collaboration with the Directorate-General for Public Works and Water Management (Rijkswaterstaat) and the Hydrographic Office. The port joins the users of this international language for water depths and levels with more efficiency and safety. For the time being, the water depth will be indicated in ALAT and NAP in the various documents issued by the Port of Rotterdam Authority.

Port Call Optimisation

Port Call Optimisation is the international cooperation between the Port Authority, shipping companies and other ports to make the port call process more efficient. Meanwhile, the first port information has become standardised according to international criteria. This information concerns berth information, the exact determination of maximum draught for every berth position based on real-time data and automatic calculation of tidal windows.

Reference: Port Of Rotterdam 

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