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 The
main window of the ship simulator shows a plan view of the sea, and the ship outline;
the ship control console is displayed on the left hand side of the main window.
The display provides a plan view of the ship and includes zoom, vehicle following,
and ship's trail. The ship control console can be designed by the user to display
required information clearly, including setting up sliders to control the engine(s)
and rudder(s) and display sensor data. The control panel includes the simulation
run controls which enable the simulation to be started, paused, reset.
3D
external view option - interface with Ship Sim 2 viewer available. Technical
features of Ship Sim: - User configurable propulsors
type (Voith Scheider, screws/rudders, azimuthing units) and parameters (position,
alignment, direction of rotation, power, size, acceleration rates, etc).
- User
configurable hull parameters, including waterline length, overall length, displacement,
moment of inertia (yaw axis), added mass coefficients, position of the centre
of gravity.
- Two hydrodynamic models are supplied:
- Wolfson model:
the derivative coefficients are calculated from the hull dimensions and displacement
using equations developed by Southampton University, which have been validated
against sea trials results from a range of large commercial vessels.
- Generic
derivative model: the user specifies the equations for the three components of
force (surge, sway, yaw) from terms made up of various powers of surge, sway and
yaw velocity. A facility for generating a Matlab module which can be used for
testing and developing models in isolation is included.
- Two
aerodynamic models are supplied:
- Isherwood model: the three components
of force are calculated as functions of wind speed and direction;
- Generic
model: the user supplies lookup tables to specify the angular variations of each
of the three components of force;
 Environment
simulation: in addition to wind, tide, and waves, the effect of shallow water
under the ship is modelled;- Wave response model: The ship motions are
calculated via the shape of the sea surface as well as the ship's velocity with
respect to the waves. A user interface dialog allows the amplitudes of response
to be scaled independently for surge, sway and yaw. Roll and pitch information
is also calculated.
- The ship-interaction model calculates the bow- and
stern- wave and pressure patterns between the vessels as well as the Bernoulli
effects.
- Multiple Own-Ships: Each ship has its own control console and
is fully modelled and independently controlled. Controls for separate vessels
may be distributed onto separate PCs or hardware units if desired.
- Target
vessels and traffic patterns: Ship Sim allows the user to introduce up to 99 other
vessels which are controlled by means of a simplified interface and configured
by specifying their physical dimensions and acceleration and turning characteristics.
Displays show the status of each vessel including the Closest Point of Approach
to the main ship. Target vessels are equipped with a NMEA interface which allows
them to send TLL data compatible with ARPA systems (e.g. for ECDIS and Radar training).
- Tugs
may be attached to the Main Ships to push or pull them, to simulate berthing or
other harbour manoeuvres.
- Coastline and harbour layout: Ship Sim may be
supplied with an integrated chart background using C-Map® vector charts. Alternatively,
a simple line-drawn coastline / harbour outline may be used to provide a reference
environment in which to manoeuvre. When using vector charts, the vessel depth-under-keel
is calculated from the chart depth contours and spot depths and from the environment
(tidal height); the vessel may run aground when attempting to navigate in excessively
shallow waters.
- Ship Sim is supplied with sea trials sequencers, for conducting
standard Turning Circle and Zig-zag trials.
- ISO16329 and IEC62065 models
are included which define the rudder and motion responses for the purposes of
testing and accreditation to IMO requirements, for normal and high speed craft.
- Ship
Sim is equipped with a DDE generalised autopilot interface, to allow users to
use in-house autopilot algorithms running on the same PC under Matlab.
- DDE
interfaces: Various components of the model (propulsors, bowthrusters, aerodynamic
and hydrodynamic models) provide a DDE interface. This interface enables the user
to program a model component, using a Fourth Generation Language (4GL) such as
Matlab.
- 3D external view upgrade option: for new users and available
as a upgrade option for existing users of Ship Sim I. This provides a external
view from the bridge or from any camera placement.
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