Simrad AP50 User Manual download pdf (Page 5)

Thruster steering

If the vessel is equipped with

a bow/tunnel thruster, it can be

connected to the AP50 system.

This opens the possibility for

Auto-heading for smaller boats

not capable of interfacing to previ-

ous ship heading control systems

on the market. A thruster icon

below the mode index indicates

that a thruster is connected to the

system. Now you can select one

of three control functions from

the user Set-up menu:

a. Rudder only.

b.Thruster only.

c. Rudder and Thruster.

With the AP50 system you will

expand the use of your thruster.

This makes it possible to hold the

vessel at one heading even with no

steerage way. Making it possible to

trawl, tow, troll on one engine, or

steer the boat straight in strong

current at low speeds. Even as

backup if there is a failure with the

rudder. With the new Nav-Work

mode all this is also possible while

navigating a route, preventing

drift. The AP50 may be set to acti-

vate the thruster automatically

when the vessel reaches a certain

user defined speed, and de-activate

when speed is too high.

Steering modes

The new AP50 system has two

"power steering" modes. Follow-

Up (FU) and Non Follow-Up

(NFU). These are used to take

advantage of the AP50 as a stee-

ring system. The course knob may

be used to set rudder commands.

In the NFU mode the rudder will

move as long as either the (PORT)

or (STBD) button is pressed or a

steering lever is used. The actual

rudder angle is shown on the

AP50 and AP51 displays, and

a small arrow indicates that the

rudder is moving.

Navigation with the AP50

The AP50 has the capability to

use steering information from an

external navigator like a GPS

Chartplotter or a more advanced

Electronic Chart System (ECS).

Since Simrad carries a wide range

of products in both these categories

the AP50 has been designed to

operate with both. The steering

and speed information received

from the external navigator alters

the set course to direct the AP50

to one specific waypoint location

or through a series of waypoints.

The AP50 is capable of navigating

with a resolution of 1/1000 of a

nautical mile (1.8m/5.9ft.)

Route navigation

With a chartplotter simple

navigation along a route can be

performed automatically. Course

changes at each waypoint need

to be acknowledged before the

turn is made. Heading changes

of less than 10

o

do not need to be

acknowledged.

Electronic Chart System

In an advanced Chart System i.e.

the Simrad CS55 a route consists

of a series of waypoints joined

together with straight legs. Each

waypoint in a route, except the

first and the last, has an associated

turn radius (size of turn in Nm)

defined. This turn radius will

allow the ship to turn before the

actual waypoint is reached. This is

done so the AP50 accurately will

follow a route in which the radius

of the course change is pre-set in

the chart system so the helmsman

will know exactly were the vessel

is going in the chart.

Multifunctional navigation...

With an ECS the AP50 will steer

seamlesly along the route.

Simrad AP50 is a perfect steering tool for a wide range of commercial vessels.

AutoWork display with Gyro and

Thruster information.

Navigation display with GPS position

information and Gyro.

The AP50 with steer to WP´s when

interfaced to a chartplotter.

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