What is the difference between ARPA and AIS?

ARPA is an extension of your radar that actively tracks targets it detects, calculating collision risk. AIS is a transponder system where vessels broadcast their own identity and navigation data to others.

Are paper charts still required on ships with ECDIS?

If a vessel has a fully compliant, type-approved ECDIS with an adequate backup system, it may be exempt from carrying a full paper chart folio. However, specific flag state requirements vary, and many operators still carry paper nautical charts as a final backup.

Do I need both digital and physical copies of required maritime publications?

Many operators choose a hybrid approach for critical publications. Through the SPICA E-READER, you can access essential digital publications from leading maritime publishers including IMO, UKHO (Admiralty), ITU, IHS Markit, Witherby Publishing, and others—all consolidated on a single, user-friendly platform. This digital solution ensures automatic updates and easy management across your fleet. However, many vessels also maintain physical backup copies of key regulatory documents. For example, the IMDG Code Amendment 42-24 2024 Edition, which is mandatory for vessels carrying hazardous materials and is amended every two years, is available both digitally through SPICA E-READER and as a physical publication. American Nautical Services offers both options—our full-service digital software package and comprehensive paper publications—allowing you to create the publication management system that best fits your operational needs and flag state requirements. Having both formats provides redundancy and ensures you're prepared for any situation, from routine reference to emergency scenarios where electronic systems may be unavailable.

What is the primary function of a VDR?

The primary function of a Voyage Data Recorder (VDR) is to create a secure, recoverable record of data related to a ship's operation, which can be used for accident investigation purposes by authorities.

Why is a magnetic compass still mandatory navigation equipment?

A magnetic compass is mandatory because it is a non-powered, reliable instrument for determining heading. The compass serves as a crucial backup in the event of a complete electrical failure on the bridge. However, it's important to note that magnetic compasses do require regular maintenance and must be professionally corrected for deviation – the errors caused by the vessel's own magnetic field from steel structures and electrical systems. To ensure your magnetic compass remains accurate and compliant, American Nautical Services offers professional magnetic compass adjustment services performed by certified technicians who can properly calibrate your compass and prepare the required deviation cards.