Silva 125FTC Marine Compass Instruction Manual

Introduction

The Silva 125FTC Compass is designed for boats and yachtsmen who require absolute accuracy and a steady card in all conditions and heeling angles. This flush-mounted compass features an apparent scale size of 125mm and a gimbaled cradle. It includes features for compensating magnetic field disturbances, integrated illumination in the adjustable protection cover for ideal night vision, and counter-balanced lubber lines that remain vertical even in rough seas. The extended center needle eliminates parallax errors and facilitates off-course bearings.

What's in the Box

• Silva 125FTC Compass

Key Features

• Compensator self-adjusts when deviated - always stay on course
• Built-in illumination allows night-time navigation
• Extended center needle eliminates parallax errors - see correct course from all sides
• Protective cover reduces chance of damage and gives your compass a longer life
• 3 Lubber lines eliminate parallax errors - can be viewed from the side

Setup

Installation Guidelines

Proper installation is crucial for the accurate performance of your Silva 125FTC Compass.

Choosing a Mounting Location

Select a flat, stable surface on your boat, away from magnetic interference sources such as speakers, motors, or large metal objects. The compass should be easily visible from the helm and aligned with the boat's centerline.

Mounting the Compass

The Silva 125FTC is designed for flush mounting. Carefully mark the cutout dimensions provided in the mounting template (refer to physical packaging for the template). Use appropriate tools to create the opening. Secure the compass using the provided fasteners, ensuring a watertight seal if installed in an exposed area.

Wiring for Illumination

Connect the illumination wires to a 12V or 24V DC power source, ensuring proper polarity. Use an inline fuse for protection. The illumination allows for clear visibility during low-light conditions or night navigation.

This image displays the Silva 125FTC Marine Compass, a flush-mount navigation instrument. The compass features a black casing, a clear dome, and a white compass card with black markings for cardinal and intercardinal directions. The design emphasizes clear readability and robust construction for marine environments.

Operating Your Silva 125FTC Compass

Reading the Compass

The compass card displays cardinal and intercardinal points, along with degree markings. Read your heading directly from the lubber line, which indicates the direction of your vessel's bow.

Deviation Compensation

The Silva 125FTC features a compensator to adjust for magnetic field disturbances caused by onboard equipment. To compensate, steer your boat to cardinal headings (North, East, South, West) and adjust the compensator screws (usually located on the side or bottom of the compass) until the compass reading matches a known true heading (e.g., from a GPS or chart). Repeat for all cardinal points for optimal accuracy.

Using Lubber Lines

The extended center needle and multiple lubber lines eliminate parallax errors, allowing for accurate readings from various viewing angles. Ensure the lubber line you are using remains vertical for the most precise bearing.

Night Navigation

Activate the integrated illumination for clear visibility of the compass card during night operations. The adjustable protection cover can be used to optimize night vision.

Maintenance and Care

Cleaning

Clean the compass dome and casing with fresh water and a soft cloth. Avoid abrasive cleaners or solvents that could damage the materials or coatings.

Inspection

Regularly inspect the compass for any signs of damage, cracks, or leaks. Ensure the mounting is secure and the illumination is functioning correctly. If the compass card appears sluggish or sticky, it may require professional service.

Troubleshooting Common Issues

Inaccurate Readings

If readings are consistently inaccurate, check for new sources of magnetic interference near the compass. Perform a deviation compensation procedure as described in the 'Operating' section. Ensure the compass is mounted level and securely.

Illumination Not Working

Check the power supply and wiring connections. Verify that the inline fuse is intact. If the issue persists, the bulb or LED may need replacement (consult a qualified technician).

Specifications

Warranty Information

The Silva 125FTC Compass comes with a Limited 2 year warranty. Please retain your proof of purchase for warranty claims.

Support

For further assistance, product inquiries, or to explore other Silva products, please visit the official Silva Store: Silva Store on Amazon.