Press ReleasesIknow Machinery, Nippon Paper Industries, and NYK Demonstrate World's
First Automatic Wood-Chip Discharging Operation with Actual Cargo
-- Reducing the burden on wood-chip cargo-handling crane operators --

Iknow Machinery Co., Ltd.

Nippon Paper Industries Co., Ltd.

Nippon Yusen Kabushiki Kaisha

Iknow Machinery Co. Ltd. (hereinafter "Iknow Machinery"), Nippon Paper Industries Co. Ltd. (hereinafter "Nippon Paper Industries"), and Nippon Yusen Kabushiki Kaisha (hereinafter "NYK") have conducted a cargo handling trial of the world's first automatic crane operation system, which was developed for wood-chip carriers by Iknow Machinery. The trial was performed at Tomakomai port (Hokkaido Prefecture, Japan) in late August and enabled the three companies to confirm the effect of the system to reduce the burden on wood-chip cargo-handling crane operators.


Wood chips loaded on wood-chip carriers are discharged using a dedicated crane installed on the ship. The discharging work is a repetitive work of capturing the wood chips loaded in the cargo hold of the ship with a special grab that is a part of the onboard crane, pulling the grab up, and throwing it into the hopper (a saucer-shaped stage) installed on the upper deck. Crane operations for discharging work are carried out by professional licensed drivers, not by the ship's crew. Crane operators usually work day and night, and when discharging all cargo at one port, they work continuously for about three days.

- Wood-chip carrier parts

- Crane

- Grab before capturing cargo

- Grab capturing wood chips

Iknow Machinery, a manufacturer of marine products, including deck machinery such as cranes, has been conducting research and development on automatic crane operation to reduce the work burden of crane operators. This is being done with the support of Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) for the introduction of cutting-edge vessels. Nippon Paper Industries, which arranges crane operators, has made it an issue to reduce the burden on and improve the work environment of crane operators. NYK has been aiming to share social issues with stakeholders involved in the supply chain and solve them by working from all possible perspectives while promoting ESG management. With this background, and together with the understanding and cooperation of the shipowner, management company, and other related parties, the three companies conducted this cargo handling trial.

Outline of cargo handling trial

The crane automatic operation system is designed to carry out discharging work once a crane operator uses an operation panel installed in the cab of the onboard crane to select one of the pre-set types of routine movements. Three sensors attached to the grab detect the surface of the cargo loaded in the cargo hold, and they wirelessly transmit a signal to the crane. The grab then rolls down, slows down its speed as it approaches the surface of the cargo, and lands on the cargo. For the sake of safety and efficiency, the system is equipped with a grab fall-prevention function and a hopper full-load detection sensor.

- Cargo detection system built in the grab