QYSEA FIFISH Navigation Tools — USBL, DVL & UQPS for Professional ROV Operations Know where your ROV is. Know where it's been. Know where it's going. The QYSEA FIFISH Navigation Tools are a suite of advanced positioning and navigation payloads designed for the FIFISH V6 Expert, V6 Pro Plus, and W6 — giving professional operators the real-time location data, position stability, and 3D path recording they need for precise, accountable underwater operations. Whether you need to track and log ROV position for evidence documentation, hold a steady station during an inspection, or map a complete 3D dive path, there’s a navigation tool built for the mission. Note: Please allow 4–6 weeks for delivery. Available Tools USBL — Ultra Short Baseline Locator — $21,390 Identify, track, and record the ROV’s precise underwater position in real time. Essential for search and recovery, evidence documentation, and any operation where knowing the exact subsea location of the vehicle is critical. DVL — Doppler Velocity Log (Station Lock) — $15,750 Achieve accurate, stable position holds using Doppler velocity sensing. Ideal for professional inspections where the ROV must remain stationary relative to a structure or point of interest without drifting. UQPS (100m) — Underwater Quick Positioning System — $11,699 A combined software and hardware ecosystem that delivers real-time ROV location, movement recording, and three-dimensional dive path mapping — rated to 100 meters. UQPS (300m) — Underwater Quick Positioning System — $17,250 The same comprehensive UQPS positioning and path recording capability, extended to 300 meters for deeper operational requirements. Compatibility QYSEA FIFISH V6 Expert QYSEA FIFISH V6 Pro Plus QYSEA FIFISH PRO W6