INTERNATIONAL HYDROGRAPHIC REVIEW 
MAY 2020 
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planned to adopt the “FAMOS geoid” as the recommended physical height reference surface 
(HRS) for the BSCD2000 and make it available at no charge latest 2023. Compared to the 
national HRS, that are also compatible with BSCD2000 and can still be used (see Table 2), this 
model will provide the advantage of a seamless transition across the national borders. 
Finally, BSCD2000 facilitates future applications that require an integrated spatial reference at 
sea and, thus, responds to the growing interrelationships between disciplines like hydrography, 
oceanography, geodesy, geophysics, climate research, coastal protection, and traffic 
management. 
CD B 
(historical 
MSI t - B) 
CD A 
(historical 
MSL t = A) 
Fig.ure 8: Illustration how mismatching chart datums affect the prediction of the actual water level correction 
between harbors 
Figure. 9: Illustration of consistent water level correction with BSCD2000.