Table 1-1 Eight available target objectives

Objective

Description

 

 

S1

Short range navigation

(Short range 1)

(within 1.5 nm); for example,

 

in harbor area.

 

 

S2

Short range navigation within

(Short range 2)

3 nm, e.g., harbor approach.

 

 

S & M

Coastal navigation on ranges

(Short and

within 12 nm.

Medium ranges)

 

 

 

L-ES

To enhance target on 1.5 to 6

(Long range-

nm range by using Echo

Echo Stretch)

Stretch.

 

 

L-AC

To suppress sea clutter on 3

(Long range-

nm range and higher ranges.

anti-clutter)

 

 

 

ES

To magnify target echoes on

(Echo Stretch)

1.5 nm range and higher

 

ranges.

 

 

B1 (Buoy 1)

To detect small targets (nav

 

buoys, small vessels, floats,

 

etc.) on ranges within 1.5 nm.

 

 

B2 (Buoy 2)

To detect small targets on

 

ranges greater than 1.5 nm.

 

 

Procedure

1)Press the FUNCTION key to display function number to program (F1, F2, or F3).

2)Press the MENU key and select the FUNC menu.

3)Press the ENTER/SELECT key.

FUNC

 

FUNC SEL (S1, S2, S&M, L-ES, L-AC, ES, B1, B2)

 

ECHO AVG (OFF, 1, 2, 3)

INTRF (OFF, 1, 2, 3)

STRETCH (OFF, 1, 2)

A/C AUTO (OFF, ON)

N REJ (OFF, ON)

P/L SET

0.75~1.5NM: SP, M1P

3NM: SP, M1P, M2P

6NM: M1P, M2P, LP

12~24NM: M2P, LP

Figure 1-19 FUNC menu

5)Select FUNC SEL and press the ENTER/SE- LECT key.

6)Select target objective desired and press the ENTER/SELECT key.

7)Press the MENU key.

Note: Each target objective defines a combina- tion of several radar settings for achieving opti- mum setup for that particular objective. Therefore, adjustment of radar settings through the FUNC menu is not necessary. If you acci- dentally change the settings, default settings can be restored by reselecting the target objective.

Turning on a function

Press the FUNCTION key to display function number desired (at bottom left corner on the dis- play.)

Note: When the main menu displays FUNC KEY*, this means no function is active and the FUNCTION key is inoperative. To select a func- tion, erase the menu and press the FUNCTION key.

1.23 Own Ship Speed

Ship’s speed can be entered manually or auto- matically (by speed log or radionav equipment). Own ship's speed is required for TM and display of vectors, E-plot, etc. The True Motion display works on a ship speed entered manually or auto- matically.

Automatic speed input

1)Press the MENU key and select the INITIAL menu.

2)Press the ENTER/SELECT key.

3)Select SPD MODE and press the ENTER/ SELECT key.

4)Select LOG or NAV and press the ENTER/ SELECT key.

6) Press the MENU key.

Note: If no speed is input for 3 minutes at below

0.1knots, the radar regards this a log failure and displays SYSTEM FAIL LOG.

1 – 17

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Furuno FR-8111, FR-8251 manual Own Ship Speed, Turning on a function, Automatic speed input

FR-8251, FR-8111 specifications

Furuno has long been a leader in marine electronics, and its FR-8251 and FR-8111 radar systems continue that tradition. Both are advanced systems designed specifically for professional mariners who demand high performance, reliability, and technological sophistication in their navigational tools.

The Furuno FR-8251 is a powerful radar system that boasts a range of features tailored for commercial vessels. With a 25 kW transmitter, the FR-8251 delivers exceptional performance, providing a clearer and more detailed image of the maritime environment. It is equipped with advanced signal processing technology, including the Doppler processing feature, which allows for the detection of moving targets. This is highly beneficial for collision avoidance, as it provides accurate information regarding the speed and direction of other vessels.

Another noteworthy feature of the FR-8251 is its large, high-resolution display that enhances visibility and ease of use, even in challenging weather conditions. The user interface is straightforward, allowing for quick adjustments and easy navigation through the various settings. It supports a variety of display formats and allows for customization, enabling operators to tailor the information presented according to their specific needs.

On the other hand, the Furuno FR-8111 is equally impressive and designed as a more compact solution without sacrificing performance. This model comes with a 12 kW output and is specifically crafted for smaller vessels, yet it still delivers high-quality radar coverage. Utilizing Furuno’s renowned Automatic Target Tracker (ATT) technology, the FR-8111 enables mariners to efficiently track multiple targets, significantly enhancing situational awareness.

Additionally, both the FR-8251 and FR-8111 come with integrated ARPA (Automatic Radar Plotting Aid), providing users with sophisticated tools for navigation and collision avoidance. The presence of multiple target tracking empowers operators to make informed decisions, optimizing safety at sea.

Furuno’s commitment to reliability and durability is evident in both models, which are designed to withstand the harsh marine environment. Their robust build quality ensures longevity, while their advanced technologies offer peace of mind.

Both the Furuno FR-8251 and FR-8111 are excellent choices for professional mariners seeking cutting-edge radar systems. With their impressive performance, user-friendly interfaces, and advanced technologies, these radar systems set the standard in marine navigation, providing essential support for safe and efficient voyages.