PRE OWNED JRC JAP-701 JRC JAP-701 MARINE AUTOPILOT

PRODUCT OVERVIEW

The JRC JAP-701 is a professional-grade adaptive autopilot system designed to optimize steering performance across a wide range of vessel sizes. Utilizing JRC’s advanced control logic, the JAP-701 "learns" the vessel’s reaction to the rudder and environmental forces like wind and waves, allowing it to maintain a precise heading with minimal rudder movements.

This model is a core component of JRC's integrated navigation consoles and is specifically engineered to interface seamlessly with JRC Radars and ECDIS (Electronic Chart Display and Information Systems). Its clear, backlit control panel provides officers with instant access to steering modes, sensitivity adjustments, and alarm status, making it a reliable choice for long-distance commercial transits.

TECHNICAL SPECIFICATIONS

-- Model: JAP-701 (JRC Japan Radio Co., Ltd.)

-- Heading Inputs: NMEA 0183 (HDT, THS), Gyrocompass, Magnetic Compass

-- Speed Inputs: NMEA 0183 (VTG, VHW, VBW) or Pulse Log (200 p/nm)

-- Control Modes: Manual, Auto, Track (via ECDIS), Economy, Weather, Adaptive

-- Supply Voltage: 24V DC (Main and Backup)

-- Rudder Outputs: Dual Solenoid (Dry Contact) or Analog (+/- 10V)

-- Off-Heading Alarm: Adjustable threshold with audible/visual alerts

-- Operating Temperature: -15C to +55C

-- Display: Multi-segment LED/LCD for heading and set-course

-- Protection Class: IP56 (Front Panel) / IP22 (Processor)

-- Interface: JRC "Course Bus" and NMEA 0183

KEY FEATURES & APPLICATIONS

-- Adaptive Control Logic: Dynamically adjusts rudder gain and counter-rudder based on real-time sea state analysis, reducing fuel consumption and mechanical wear.

-- Track Control System (TCS): When interfaced with a JAN-701B or JAN-901B ECDIS, the JAP-701 can follow a pre-planned route automatically, including precise course changes at waypoints.

-- Economy Mode: Prioritizes fuel efficiency by allowing a wider yaw band in open seas where strict course-keeping is less critical than reducing rudder drag.

-- Weather Mode: A high-sensitivity setting for heavy seas that ensures the vessel responds quickly to wave-induced heading deviations.

-- Seamless JRC Integration: Designed to work perfectly with JRC’s "Tornado" processors, ensuring zero-lag communication between the autopilot and the radar/ECDIS overlay.

-- Override & Emergency Functions: Features a dedicated override button to immediately return control to manual steering in the event of a navigational emergency.

TYPICAL CONDITION (USED/REFURBISHED)

When we source JAP-701 units from ship-recycling yards, we perform a deep diagnostic check of the internal processor boards. We verify that the NMEA data ports are correctly receiving heading and speed data without packet loss. Each unit is tested with a steering gear simulator to confirm the solenoid relays are firing cleanly. We also inspect the front membrane panel for any signs of UV damage or water ingress to ensure long-term durability back at sea.

COMPATIBLE BRAND MODELS:JRC (JAN-701B, JAN-901B, JMA-5300, JMA-9100, JHS-183), Tokimec / Tokyo Keiki (PR-6000, PR-9000), Yokogawa (PT500, PT700), Raytheon Anschütz (Standard 22, NP2015), Furuno (FAP-2000, FAP-3000), Sperry Marine (NaviPilot 4000).

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