A compass deviation survey determines the amount of magnetic deviation in a compass under shipboard conditions. Conducted by qualified compass adjusters, the survey includes multiple heading checks and is often followed by a deviation card. In India, these surveys are done before sea trials or after structural modifications to a vessel.
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Ship compass testing is conducted to verify compass performance, deviation levels, and fluid integrity. It is part of mandatory inspections and is often required by classification societies. In India, this service is available at shipyards and via onboard surveys. Testing is documented and used for performance review and corrections.
A compass servicing company in India specializes in magnetic compass repair, calibration, and adjustment. These companies cater to shipowners, ports, and surveyors, offering on-site and in-house services. They are staffed with trained technicians and equipped with precision tools to issue valid deviation reports and certificates.
A magnetic compass overhaul involves complete disassembly, cleaning, fluid replacement, magnet check, dome sealing, and recalibration. It restores the compass to like-new condition. Overhauls are recommended every 3–5 years, especially on older vessels. Indian marine workshops offer overhaul services with optional compass certification for class approval.
Compass alignment service ensures that the compass is properly oriented along the vessel’s centerline and magnetic meridian. Misalignment can result in significant navigational errors. Indian marine technicians perform alignment during installation or post-repair. Proper alignment supports accurate autopilot inputs and navigation repeaters.
Compass adjustment services involve the correction of magnetic deviation using soft iron correctors and magnets. Certified compass adjusters perform these adjustments on board to reduce compass error. In India, these services are available at ports like Mumbai, Chennai, and Kochi. A deviation card is usually issued after adjustment, aiding navigators with accurate headings.
A compass calibration certificate is an official document issued after a successful compass calibration. It includes the deviation values, correction angles, and technician credentials. In India, authorized compass adjusters provide this certification, which is often required during flag state and port inspections. Valid certificates enhance compliance with SOLAS and IMO requirements.
Establishing a regular magnetic compass maintenance schedule is essential to ensure long-term reliability and accuracy. Typical tasks include visual inspection, deviation checks, fluid top-up, cleaning, and magnet alignment every 6–12 months. Indian shipping companies follow planned maintenance systems (PMS) that include compass servicing. Proper documentation and servicing logs are also maintained for survey readiness.
A magnetic compass service technician is a trained professional who performs installation, calibration, repair, and maintenance of shipboard compasses. In India, certified technicians provide both onboard and workshop-based services. They use precision tools for deviation correction and alignment, ensuring navigational safety. These experts are vital during surveys and inspections by maritime authorities.
Magnetic compass repair in India is a critical service for ships, boats, and marine institutions. Common repairs include fluid replacement, magnet realignment, card repair, and dome sealing. Authorized technicians perform these tasks following IMO and SOLAS guidelines. Repair centers are available at all major Indian ports and shipyards. These repairs ensure compass accuracy, safe navigation, […]