Preguntas acerca del ECDIS

1 - Seleccione una ENC (electronic navigational chart)

Qué modo de display está seteado actualmente en el sistema?

a)      Base

b)      Estándar

c)       Otro

2 - Cómo están seteados el safety contour y/o el safety depth?

Safety depth es considerada la minima profundidad requerida en la cual el buque puede navegar con seguridad sin ninguna profundidad menor que pueda comprometer la seguridad del buque. Para todos los medios prácticos la profundidad de seguridad o safety depth se determina como sigue:

M.V ABCD
Draft (static) - 12.5 mtrs
Speed - 10 kts
Assuming block coefficient : 0.7 (to simplify things)

Squat (for confined waters): Cb x V(Square) / 50
                                         = 0.7 x 10 x 10 / 50 = 1.40 mtrs.

Assuming Height of Tide: 1.4 mtrs

Ukc (required as per individual company policy) : 20 % of static draft (in coastal waters)
                                                                               = 20 x 12.5 / 100 = 2.5 mtrs.
  Safety Depth :
   = Draft + Squat + Ukc - Ht. of Tide
   = 12.5 + 1.40 + 2.5 - 1.4 = 15.0 mtrs. 

3 - Se aplicó la escala mínima (SCAMIN) para los seteos de la ENC (electronic navigational chart)?

4 - Cómo puede lograr la mejor escala (best scale / compilation scale) cuando está usando una ENC

5 - Como puede consultar un objeto que se encuentre en la carta (chartered object)

6 - Qué es el CELL NUMBER de una ENC, que está actualmente en el display?

Electronic navigational charts (ENCs) are produced in accordance with international requirements as regards content and structure. They are delivered in accordance with the "ENC Product Specification" of the S57 standard, which was prepared with regard to the exchange of hydrographic data.

The data is part of a seamless database, in which the data is divided into chart cells with defined limitation and data amounts. The individual chart cells are identified by a unique cell number. The data is continuously updated through the distribution of revision files.

7 - Dónde puede encontrar el DATA QUALITY PATTEN / CATZOC / Quality object setting?

Despite the best efforts of Hydrographic Offices (HOs) around the world, the ENCs that are on the market today do not always depict the real world as accurately as would be desired. This situation arises because gathering detailed hydrographic data is slow and consequently, ENCs (and paper charts) are compiled from multiple data sources, some modern and comprehensive, some old (even ancient) and others from all stages in between. When the IHO developed the S-57 standard this situation was recognised and the quality of survey data used to compile ENCs had to be encoded within a composite data quality indicator ‘Category of Zone of Confidence’ (CATZOC).

However, a questionnaire issued by the IHO Data Quality Working Group (DQWG) and completed by over 600 mariners worldwide clearly indicated that CATZOC was not well understood, not liked, nor allowed mariners to adequately make decisions based on data quality. The DQWG has, therefore, rejected CATZOC for S-101 and is developing a new and improved method to depict data quality.

8 - Puede cambiar la simbología de la carta entre la Tradicional (papel) y la simplificada (S-2)?

ECDIS can be set to display aids to navigation with either traditional “paper chart” or simplifi ed symbols. The two symbol sets are shown below. Some ECDIS color fi ll the paper chart buoy shapes, but this is not required by IHO ECDIS portrayal specifi cations.

9 – Seleccione una RNC (raster navigational chart) / algunas marcas no lo permiten

a)      Qué limitaciones tiene el operador al usar una RNC en el ECDIS?

10 – Dónde está el menú de seteo del SENSOR?

11 – Es posible deseleccionar el sensor del GPS e ir manualmente?

In event of GPS failure, the operator can utilise the DR function in ECDIS and revert to traditional fixing skills in order to provide accurate positional data. Note that loss of GPS may also mean loss of positional information on your RADAR. Furthermore, the environment you find yourself in may preclude or limit visual fixing to such an extent that the operator may have to use transferred position lines or fix by a line of soundings.

12 - Hay una referencia de ENC Chart 1 en el Sistema ECDIS?

(Es para que vean la simbología, algunos no la tienen)

a)     Si es así, dónde está?

b)     Si no, a qué publicación se puede referir?

13 - Cuál fue la última vez que se aplicó el LOP Fix?

a)     Qué otro tipo de fijación de posiciones se aplican a las cartas?

14 - Dónde y como se puede importar / exportar el plan de viaje

15 - Dónde y como puede ver la función PLAYBACK

16 - Cambiar los seteos del monitor o display, brillo y contraste

17 - Cuando se instaló la última actualización de cartas?

18 - Cúando se realizó la última corrección de manual?

19 - Dónde está el libro de registros del sistema ECDIS?

a)     Cuál fue el último evento mayor registrado?

20 - Cuándo fue la última vez que se testearon el IHO data presentation and performance check (international hydrographic organization)

a)     Qué novedades se encontraron?

The IHO ENC/ECDIS Presentation and Performance Checks are intended to make mariners aware of any shortcomings with their ECDIS. When they have completed the checks, Masters are asked to fill in the accompanying reporting form and return it to the IHO – either directly online, or by email, fax or post. There is no need to identify yourself or your ship if you do not want to. This feedback will enable the IHO to identify how the different brands of ECDIS display and handle chart data, and will allow national Hydrographic Offices, ECDIS manufacturers and others to take any corrective action that may be necessary.