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When a shipowner asks for UWILD inspection services in Nagoya Port, he is usually asking for three things at once: a team the class surveyor will accept, a dive plan that fits the cargo schedule, and a report that needs no rework. This page explains what our service includes and how it runs.
UWILD stands for Underwater Inspection in Lieu of Dry-docking. Our package covers the full bottom inspection the surveyor asks for, so the Ship does not have to leave service:
A UWILD job is run by a dive supervisor, two or more working divers, a standby diver and a surface tender, plus a technician who looks after the CCTV and recording equipment. The attending surveyor stands on deck with a monitor and can ask the Diver to stop, go back or take a closer look at any area. Our team holds ClassNK and ABS certification, which means the surveyor already knows the kind of procedures and paperwork to expect. Always you can reach us
IACS member societies set the general framework for in-water surveys, and each society adds its own conditions. In broad terms the ship needs a sound coating, a Hull clean enough to see the plating, and no known damage below the waterline. The surveyor can decline UWILD if the picture is poor, so we begin every job by checking visibility and cleaning where it is needed. If the surveyor is not satisfied with what he sees, we say so at once and talk about the alternatives.
Tell us the ship's IMO number, ETA, berth and Draft. We confirm the dive window with the agent and send back a short job plan, usually on the same day. Bulk carriers, bauxite carriers, tankers, container ships and car carriers all follow the same basic procedure. Only the hull area and the time on site change. A smaller coaster may take half a day. A fully laden bulk carrier at a busy terminal may need a full day and a second dive team.
You receive the report by email as a PDF with the video files attached or linked. The superintendent can forward it to the class office the same day. If the report shows a defect, such as a worn anode or a bent rudder fitting, we can quote the repair and often carry it out during the same call, which saves another visit.
Any diving contractor can look at a Hull, but a UWILD job has its own demands: a surveyor on deck, a strict record, and a tight window in a working port. We do this work regularly in and around Nagoya, so the procedures, the paperwork and the equipment are ready before the ship arrives.
Q1. What is included in a standard UWILD inspection?
A standard UWILD covers the whole underwater Hull, rudder, propeller, sea chests and thruster tunnels, with live CCTV, photographs, ultrasonic Thickness Measurement at surveyor-selected points and a written report.
Q2. How many people are in the dive team?
A typical team is 5 to 6 people: 1 dive supervisor, 2 working divers, 1 standby Diver, 1 surface tender and 1 CCTV technician. Larger ships may need a second team.
Q3. What is the maximum interval between bottom examinations?
Class rules based on IACS requirements generally require two bottom examinations in any 5-year period, with no more than 36 months between them. UWILD can replace one of the dry-dock examinations on eligible ships.
Q4. How soon is the UWILD report delivered?
The report with video and photographs is normally delivered within 24 hours of finishing the dive, as a PDF with the video files attached or linked.
