The database resulting from (1) the transformation of the electronic navigational chart (ENC) by ECDIS for appropriate use, (2) the updates to the ENC by appropriate means, and (3) the additional data added by the mariner, is called the __________.

Correct Answer: Option B — system electronic navigational chart

The System Electronic Navigational Chart (SENC) is the database resulting from the ECDIS transforming the ENC into a format suitable for display. It incorporates official updates and any user-added information, serving as the internal database used by the ECDIS software to generate the chart display for the navigator.