Furuno 520, 511, 611 3-15, Navigating to TLL point, TLL navigation, Orbit, Spiral, Figure Eight

3. STEERING MODE

Navigating to TLL point

When TLL (Target Latitude and Longitude) data is input from a radar or echo sounder connected in the STBY, AUTO or NAV mode, the TURN menu appears. Then, you may choose how to progress towards that position, from ORBIT (port direction, starboard direction) or FIGURE EIGHT. (You may also continue current steering mode, by choosing OFF.) Also, you can set the radius of orbit on this menu. For this mode, own ship’s position L/L data and waypoint L/L data are required.

ORBIT

The boat makes circles around the TLL point.

SPIRAL

The boat goes to the TLL point spirally. After arriving to the TLL, the boat begins orbiting around there.

FIGURE EIGHT

The boat automatically returns to the TLL position when it goes more than a distance (set on menu) away from the TLL position.

Orbit around the TLL

TLL

TLL

Distance set on menu

Orbit maneuver	Figure eight maneuver
	Orbit around the TLL

TLL

Spiral maneuver

TLL navigation

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