Loch multi-purpose instrument SeaVelo™

speed logfor boatdigital

Overview
SeaVelo™ displays speed through water and distance logging together with GNSS speed to provide set and drift calculations, dual-axis docking speeds and rate-of-turn on a single bridge screen. Implemented for the SEALINK 5200 bridge platform, SeaVelo™ consolidates inputs from existing log sensors, GNSS, gyro and echo sounder over standard NMEA 0183 and supports a Bridge Alert Management (BAM) channel.

Key benefits

• Accurate speed-through-water (STW) with trip and total distance logging
• Dual-axis docking view showing bow, stern and ahead speeds for berthing
• Set and drift derived from the difference between STW and SOG for current awareness
• Depth beneath surface and below keel on the same display
• Rate of turn, heading and course over ground displayed alongside speed data

Product details
SeaVelo™ is presented on a sunlight-readable 5-inch capacitive touch display with anti-glare/anti-fingerprint coating, mounted on a tilt yoke for bridge or console installation. The system reads through-water speed from a hull-mounted SEALINK Speedlog sensor and computes longitudinal and transverse speed components to present bow/stern speeds in a plan view for berthing. Combining live STW and SOG on one screen enables immediate visibility of set and drift to support passage planning and manoeuvring.

System specifications

• Display: 5-inch capacitive touch, AG/AF coating
• Sensor: SEALINK Speedlog through-hull transducer
• Power: 12–24 V DC, dual DC inputs with automatic redundancy and power-failure alarm
• Operating temperature: -20 °C to +70 °C
• Compass safe distance: 1.30 m (standard) / 0.85 m (steering)

Interfaces & Integration
Power: 12–24 V DC, dual DC inputs with automatic redundancy and power-failure alarm
Sensor port: Full-duplex RS-422 port with 24 V DC current monitoring
High-speed NMEA: 4 × configurable NMEA 0183 ports (input or output)
BAM interface: Full-duplex NMEA port for Bridge Alert Management
Dry-contact: One dry-contact solid-state relay interface
USB: USB-C for backup and software updates

SeaVelo system includes

• 1 × Display Unit — 5200 (5-inch)
• 1 × Display Mounting Bracket — DBRT, deck or flush mount
• 1 × Power Cable — 12–24 V DC, fused
• Also supplied: Quick-start card, digital-manual QR card and installation manual

Additional details
SeaVelo™ provides trip and total logging, dual-axis docking views for precise berthing, rate of turn, and a combined presentation of STW and SOG to make set and drift directly visible on the bridge. The sunlight-readable capacitive touch display with AG/AF coating is sized and mounted for bridge or console installation and supports integration with existing navigation sensors.