What are the 4 safety settings of ECDIS?
There are 4 important safety settings in ECDIS
- Shallow contour setting.
- Safety contour setting.
- Safety Depth setting.
- Deep contour setting.
What is safety contour setting?
The safety contour is the most important parameter of all the safety settings for the display of unsafe water areas, detecting isolated dangers and triggering anti-grounding alarms. The safety contour is basically an outline which marks the division between safe and unsafe waters.
What is the default safety contour value?
The safety contour marks the division between navigable (safe) and non-navigable (unsafe) water. If the navigator does not specify a safety contour, this will default to 30m or 50m value depending on type and/or model of ECDIS.
What is safety contour depth?
Safety Contour: A specific depth contour set by ECDIS. It demarks the boundary between “safe-water” and shallow water with an extra wide isoline and is used to give an alarm if the ship, within a time specified by the mariner, is going to cross the safety contour.
What is contour setting in ECDIS?
A contour is a line separating a minimum depth area. For example a 10 meter contour will be a line that separates waters below and above 10 meters depths. The contours are in the value of 5, 10, 15, 20, 30 and so on. Shallow contour value need to be used to tell ECDIS what is the value of shallow waters for our draft.
What is deep contour in ECDIS?
ECDIS uses a “safety contour” value to show an extra thick line for the depth contour that separates “safe water” from shoaler areas. If the mariner does not set an own-ship safety contour value, ECDIS sets the value to 30m.
What is s 52 in ECDIS?
S-52 is a standard used by ECDIS manufacturers that determines how ENC data is displayed on an ECDIS screen through symbols, line styles, colours and other visual cues. This means that what the mariner sees on the screen is displayed in the same way across all approved makes and models of ECDIS.
What is LDL on ECDIS?
‘Limiting Danger Line’ (LDL) in red. Set the LDL to trigger an alarm when breached by look ahead function. Navigating Across Safety Contour.
What is XTD in ECDIS?
Cross-track distance (XTD), is set to a number of meters on the port and starboard side of the dotted track line. The corridor can then be automatically checked in ECDIS for under-keep clearance. An alarm can also be set to sound if the vessel leaves the corridor.
What color of contour is referring deep contour in ECDIS?
⦁ Areas with depths lesser than the set safety contour is coloured blue and deeper depth area is coloured white.
How do you determine safety contour?
Safety Contour: Is calculated same as per Safety depth AND activates ALARM when depth is less. Deep Contour: Indicates the limit of sea area where shallow water effects occur that can affect a vessel. It should be estimated twice or four times the draught of vessel (depending on the depth of water available)
What is s 61 IHO?
S-61 defines the minimum requirements for a raster navigational chart (RNC) to be used in the Raster Chart Display System (RCDS) Mode of Operation, as described in the IMO Performance Standards for ECDIS.
How to calculate safety contour in ECDIS?
Unlike paper charts ECDIS allows the officer to set safety parameters according to the ship’s static or dynamic particulars. The safety contour can be calculated as follows: SAFETY CONTOUR = SHIP’S DRAFT + SQUAT + UKC – HEIGHT OF TIDE Let us check an example. Let us consider that as per company policy UKC requirement is 10%.
What is ECDIS and how to use it?
Unlike paper charts ECDIS allows the officer to set safety parameters according to the ship’s static or dynamic particulars. The safety contour can be calculated as follows: SAFETY CONTOUR = SHIP’S DRAFT + SQUAT + UKC – HEIGHT OF TIDE
What is the best practice for handling safety settings on ECDIS?
This article will help to understand the best practice for handling safety settings on ECDIS which includes the Safety contour, safety depth, shallow contour, and deep water contour. The model of ECDIS used for illustrations is Furuno. These values can be entered in Furuno ECDIS by following the steps mentioned below:
How to set the safety contour setting of the ENC?
On inputting the safety contour setting, areas of the ENC with depth value lesser<= Safety contour setting is displayed as light blue zone. Safety contour setting = (Static draft + all allowances + Minimum net UKC requirement for that area – Height of tide)