Settings / Status Bar
SEAiq uses status bars for presenting sensor data and other information on the Navigate display.
There are two different status bars a vertical bar on the right side of the display and a horizontal bar on the top of the display.
- Vertical Status Bar: This is shown along the right-hand side of the display. Available data is logically grouped together and font-size is used to emphasize more important information so it is easier to read. Data is also shown in a context-sensitive fashion. For instance, when AIS is enabled the most recently selected AIS target will be displayed. You can drag the status bar to scroll it up and down.
- Horizontal Status Bar: This is shown along the top of the display. It displays COG, SOG, HDG, and ROT.
These settings control which status bars are displayed. Note that you can also select these using the buttons on the top and right of the Navigate tab.
- Show Lat & Lon: This controls whether the GPS position should be displayed in the status bar on the side of the display. It can be useful to not have latitude and longitude displayed in order to reduce clutter. This setting also controls the GPS validation data.
- Show GPS Diagnostics: This controls display of GPS diagnostic information, such as the fix type (GPS, DGPS, etc), HDOP, HPE, number of satellites, etc.
- Show GPS Satellites: This controls display of GPS satellite information (when available). This information is normally only available when using an NMEA feed with xxGSV sentences. T
- Precise Heading: (Only SEAiq Pilot) When enabled, heading is displayed with an extra degree of precision (359.9°). This should only be enabled if you know your heading sensor has the required level of precision. When this is enabled and Settings / Alarms / Heading Tick is enabled, then the ticks are made on 1/2°.
- Precise Course: (Only SEAiq Pilot) When enabled, course is shown with an extra degree of precision (359.9°). This should only be enabled if you know your course sensor has the required level of precision.
- Precise Rate of Turn: (Only SEAiq Pilot) When enabled, ROT is shown with an extra degree of precision (10.1°/m). This should only be enabled if you know your ROT sensor has the required level of precision.
- Vessel Motion: (Only SEAiq Pilot) This controls whether to display a section in the status bar displaying vessel motion. It gives the bow and stern speeds to port/starboard and the vessel's speed ahead/astern. The estimated speed accounts for the position of the antenna, course and speed (COG/SOG), heading (HDG), and rotation of the vessel (ROT). All of these sensors must be available. The calculations assume vessel rotates about its center.
Normally, a single digit of precision is displayed. If Precise Rate of Turn is enabled, then 2 digits of precision are shown.
If all of the settings are not present but at least COG, SOG, and HDG are present then a simplified analysis is shown that only has 1 lateral speed in place of the bow and stern that corresponds to the lateral speed of the GPS antenna. In this case, GPS is shown for the lateral motion and NA for where the stern motion would have been shown.
- Show Radius-of-Turn: (Only SEAiq Pilot) When enabled, a panel is shown with the radius of turn based on current SOG and ROT of Own-Ship. A maximum turn radius of 5nm is displayed.
- Beam/Length/Draft: (Only SEAiq Pilot) This controls whether to display a panel with length, width, and draft for Own-Ship.
- Show Bow-Waypoint Range: (Only SEAiq Pilot) When enabled, a panel is shown with the distance along the route from bow to the next waypoint. For waypoint with a turning radius, the waypoint is considered to be the mid-point of the curve. In cases where the bow has passed the next waypoint but the waypoint has not advanced, a negative distance is shown.
- Wind Direction: Choose format for presenting wind direction (true and apparent): relative to Own-Ship heading (+/- 180) or with absolute bearing (0-360).
Wind direction is normally reported as a direction relative to Own-Ship's heading. To convert to absolute bearing, heading data must be available. If not, then the wind is reported as relative values.
- Squat (Estimated): (Only SEAiq Pilot) Squat is a hydrodynamic effect that occurs as large vessels move through shallow water. Depending on various factors, the vessel may sit deeper in the water than its draft while stationary. This extra depth is called Squat.
Squat is complex. The values calculated for squat are only rough estimates for the actual squat. Many other factors not accounted for in the estimate may affect squat, such as movement of other vessels in a confined channel. This feature should only be used by Pilots familiar with squat, the formulas described below, and their correct use. If you are unsure, leave this feature disabled.
When this setting is enabled, a panel is shown with the estimated squat for both open water and confined channels. A confined channel is generally considered to be a channel less than 3 times as wide as the vessel's beam. The estimated squat value is only displayed in the status bar and is not otherwise used in SEAiq.
Estimating squat require that the Block Coefficient be set for Own-Ship (see Own-Ship settings).
- Open Water: Squat = 1/100 ⋅ Cb ⋅ V2
- Confined Channels: Squat = 1/50 ⋅ Cb ⋅ V2
In the formulas above, Squat is calculated in meters and V is the vessel speed in knots.
- Pivot Point (Estimated): (Only SEAiq Pilot) The pivot point is the point around which the ship appears to be turning for an observer standing on board the ship. The location of the pivot point is not constant and depends on external factors acting on the ship such as use of tugs, bow thruster, ship's rudder, ship motion ahead or astern, wind forces, current, and water resistance. Having an estimate of the pivot point can provide insight into a vessel's motion.
When enabled, this feature presents a panel with the current position of the pivot point.
The estimated pivot point is calculated with the following formula: lateral_speed / ROT. lateral_speed is the component of the vessel's motion amidships transverse to the centerline (motion to port/starboard) in metre/second. ROT is the vessel's rotation in radians/second. The result is the position along the centerline forward/aft of amidships, in metres. This calculation assumes the center of gravity is amidships (50% of length of the vessel). Note that this assumption is not likely to hold if there is a large difference between the fore and aft draft.
The pivot point is presented relation to various positions on the vessel, depending on its location:
- AMIDSHIPS: at most 0.5m forward or aft of amidships, the middle of the vessel.
- BOW: at most 0.5m forward or aft of the bow, the foremost end of the vessel.
- STERN: at most 0.5m forward or aft of the stern, the after end of the vessel.
- FWD OF BOW: The pivot point is forward of the bow, outside the vessel. Distance is measured from the bow.
- AFT OF BOW: Between amidships and the bow. Distance is measured from aft from the bow.
- FWD OF STERN: Between the stern and amidships. Distance is measured forward from the stern.
- AFT OF STERN: The pivot point is aft of the stern, outside of the vessel. Distance is measured from the stern.
The estimated pivot point should only be used by pilots familiar with the concept of pivot point, the calculation above, the assumption regarding the center of gravity being amidships, and correct uses of pivot point. If you are unsure, leave this feature disabled.
- Show Time: When enabled, the current local time is displayed at the top of the side status bar.
- Lock Onto AIS Targets: (Only SEAiq Pilot) The default behavior is to show a panel for an AIS target only if selected. When this switch is enabled, the most recently selected AIS target is always shown in the status bar.
- Lock Onto Waypoints: (Only SEAiq Pilot) The default behavior is to show a panel for a waypoint only if selected. When this switch is enabled, the most recently selected waypoint remain displayed in the status bar.
- Return Order of Status Bar to Default: Pressing this button reverts SEAiq to using the default status bar ordering.