Page 39: of Maritime Reporter Magazine (April 15, 1981)

cations capabilities that business- es have enjoyed ashore for years.

These capabilities include fast and dependable telex, telephone, facsimile, and data communica- tions, including a 56 KBIT option.

Compact and simple to operate, the terminal consists of an an- tenna unit installed above deck, and electronics/power units in- stalled below deck, the latter gen- (continued on page 42)

ROBERTSON

The new Robertson AP-8 Auto- pilot is a full feature system de- signed for vessels from trawlers and large yachts to supertankers —and everything in between. Al- though it will operate from a magnetic compass heading refer- ence, it is specifically meant to interface with the Robertson

SKR-80 Gyrocompass. Both are manufactured by Robertson AS of Egersund, Norway, and Le- onia, N.J.

The AP-8 consists of three units that can be mounted together in a bulkhead, overhead, or on the

Robertson SS-3 steering station.

The main panel unit has a sensi- tivity control, as well as rudder, counter rudder, and rudder limit control for fine tuning of auto- pilot function under any combi- nation of wind, weather, sea state, ship loading, and steering char- acteristics.

This panel contains an off- course and system fault alarm that gives visual and audible no- tice if the autopilot system de- velops a fault or if the main gyrocompass and auxiliary mag- netic compass differ by a preset amount. A compass selector al- lows the heading reference to be switched from the gyro to the auxiliary compass in case of trou-

Write 340 on Reader Service Card

April 15, 1981 41

RF Communications Division is an advanced synthesized (trans- mitter / receiver), automatic er- ror-correcting, radio teletypewrit- er system. A unique high-speed switch allows operation from a single antenna. The RF-2330 can be operated in either simplex or split channel (half-duplex) modes.

The RF-2330 ARQ terminal is a complete system that features 1 kw PEP or average, microproc- essor control, switched simplex operation, high-frequency stabil- ity, and channelized full-frequen- cy coverage. As a complete sys- tem, the RF-2330 includes all elements necessary for operation including the basic transmitter (RF-233), receiver (RF-530),

HAARQ Modem (RF-3500), and antenna coupler (RF-1205). The teletypewriter is available as an option.

For further information,

Write 44 on Reader Service Card ble. The fault system monitors rudder feedback, voltage levels, and gyro input continuously for an almost completely fail-safe system. The panel also contains port and starboard rudder com- mand indicators that light when- ever the autopilot inputs the rud- der actuator.

The AP-8 can be programmed to suit the characteristics of near- ly any vessel. It is designed to meet and exceed the requirements of IMCO, West German DHI and

Norwegian Maritime Directorate regulations.

For further information,

Write 45 on Reader Service Card

SCIENTIFIC-ATLANTA

The Scientific-Atlanta terminal,

Model 3055M, Inmarsat Satellite

Communication Terminal, gives a ship or an offshore facility at sea many of the same communi-

Radar that reads between the waves. © ® © v o o 0 ® 0 o-e o~® o-e because Sperry knows how to listen.

Radar observers often have problems spotting small targets in sea clutter. Increasing receiver gain only, intensifies confusion.

But Sperry SEATHRU radars MK 3012 and MK 4016. signi- ficantly reduce clutter and amplify target returns to read between the waves

Unique SEATHRU solid-state circuitry reduces clutter and adjusts gain automatically. An operator-selected Power

Pulse enhances detection of small targets within a 12-mile range.

Standard features include a variable range marker with digital readout, logarithmic receiver, reflection plotter. specia installation materials, onboard spare parts and operator's manuals.

It's a complete system. And. by employing options, you can customize the system to meet your specific requirements.

Options include a broad range of display presentations and enhancements, and a dual-system radar selector that ensures radar availability in critical situations.

Sperry SEATHRU radars meet existing and proposed IIV recommendations and are approved by major worldwide regulatory bodies.

So for unsurpassed resolution of small targets in clutter, read between the waves. Choose reliability-Sperry

SEATHRU radars

For more information on what we're up to in marine radar just ask us.. .we understand how important it is to listen.

Call, or write to: Sperry Division-Headquarters.

Marine Systems Marketing. Great Neck. New York 11020 (516) 574-2807.

JL. ir

SPERRY iS A ~ . S O\ OF SPERRV CORPORATION