November 10, 2021

New Fish Pumping System for Denholm Seafood

Scottland
Aquaculture
Onboard
Onshore
Other
Pelagic fish
Whitefish 
Going the distance with the new ValuePump system GIF

Denholm Seafoods’ new ValuePump system transfers pelagic catch a record distance from vessels to plant in Peterhead, Scotland.

Denholm Seafoods Installs KAPP Skaginn ValuePump System in Scotland

This pelagic season in Scotland saw the first ever direct pumping transport of pelagic catch from ship to plant over a distance of 250 meters. Using KAPP Skaginn’s innovative ValuePump, Denholm Seafoods can now convey product gently through a closed, low-pressure pipe system with ice sludge directly from the ship into the production hall. Starting up in October 2021, the system is powered by KAPP Skaginn’s Value Pump and the accompanying pipe system that is connected directly to the delivering pelagic trawler.

A pump for positive effect

“We wanted to automate more of our processes and find a solution that would positively affect our production flow, quality and costs,” says Richard Duthie, Commercial Director of Denholm Seafoods. “Our efforts to streamline our operation and implement further sustainability measures by not using trucks for catch transport led us to working with KAPP Skaginn on this project.”

Maximizing yield, quality and throughput

Denholm Seafoods operates three modern purpose-built quayside plants in Peterhead, Scotland, which process herring, mackerel, horse mackerel and blue whiting. Different trawlers supply Denholm Seafoods with the raw material, each with their own type of delivery system that can be connected to the ValuePump transfer line at the dock. The new method not only keeps costs down, eliminating truck traffic between trawler and factory, but also maintains a regulated, steady flow of raw material into production that maximizes yield, quality and throughput.

A groundbreaking solution for catch transport

“No one has used this method before over this distance. We decided to go for it and chose KAPP Skaginn as our partner,” says Wayne Summers, Engineering Manager at Denholm Seafoods. “We’ve had a long-standing relationship with them and we knew what they could do. With them and our inhouse experts we developed a groundbreaking solution for catch transport that helps us enhance our operation and keep our quality levels where we want them.”  

Pumps 60 tons of fish over 250 meters

Located in a new reception house on the quay, the system is made up of stainless-steel pipelines, a reception tank with conveyors and the automatic ValuePump that transfers 60 tons of pelagic fish per hour over a distance of 250 meters. “The screw pump method treats the raw material well, maintaining the quality of the catch through the process,” says Duncan Yule, Engineering Manager at Denholm who participated in the development of the project. “Our flow control is now a stepless process making it easy to adjust the capacity and throughput to what we need for production.”

Product image of a ValuePump
ValuePump

Energy saving method supports sustainability

The ValuePump process creates substantial energy savings both in terms of the operational costs of the system itself — the ValuePump’s energy consumption is far less than that of conventional pumps — and in terms of eliminating traffic on the docks and the accompanying fuel consumption. “We have strict quality control standards that are designed to deliver quicker turnaround for our customers and keep our products sustainable,” says Duthie. “This latest addition to Denholm Seafoods operation is yet another step in lowering our carbon footprint.”


Better flow control, better temperature control

The new system delivers product optimized for further processing in a steady, regular flow, from vessel to factory. “There is a steady flow of fish in fluid ice from the pump into the plant without any pulse or variations,” explains Johannes Weber, Mechanical Design Engineer at KAPP Skaginn, who oversaw the installation at Denholm. “With a continuous pace and a well-regulated, steady temperature, Denholm now has a consistent automatic supply of quality raw material coming in for further processing.”  

Gentle product handling maintains quality

During the Mackerel season, Denholm Seafood has seen the Value Pump deliver high quantities of raw material at a steady pace over longer distances than possible before. The gentle propelling principle of the ValuePump treats the raw material gently and along with the cooling capacity of the fluid ice, maintains the quality and value of the fish in the pipeline. “The ability to further cool the product in the system has proven to be very beneficial,” explains commercial director Duthie. “As a matter of fact, our Japanese buyers have commented on the better quality of our product after we installed the ValuePump.” Better quality is also gained by preventing product from being exposed to external stressors in the transfer process.

Collaborative effort key to success

"We started this development project after seeing trials in Iceland. When we saw the potential of the prototype there was no turning back. We had to have it,” says Duthie. “Our collaboration with KAPP Skaginn has gone really well and their hands-on approach has delivered the result we wanted. It has all worked out well, the system exceeded our expectations and the project has been successful."

Valuepump pumping fish onto a conveyor
FIsh pumping system at Denholm Seafood

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Seafood Expo North America 2026

March 15–17, 2026 · Boston, USA

Thomas M. Menino Convention & Exhibition Center

Where the Cold Chain Never Breaks

KAPP will be exhibiting at Seafood Expo North America & Seafood Processing North America, the leading seafood industry event in North America.

Thousands of seafood professionals gather in Boston each year to connect, exchange ideas, and explore the latest innovations in processing, packaging, and technology.

Join us to discover how KAPP’s chilling, freezing, and processing systems protect product quality and extend shelf life. From the moment seafood is harvested until it reaches the consumer.

Innovation That Protects Quality

KAPP designs and builds advanced systems that ensure precise temperature control and uncompromised product integrity.

Our solutions are trusted worldwide for their efficiency, reliability, and sustainability across seafood, aquaculture, and food-processing industries.

Discover our key technologies:

  • OptimICE® Liquid Ice System – Rapid, energy-efficient cooling that keeps seafood at −0.5 °C / 31.1 °F without freezing.
  • RoteX™ Sub-Chilling™ & Thawing – Patented systems for sub-zero, no-ice chilling (down to −1 °C / 30.2 °F) and precise low-temperature thawing.
  • KAPP Skaginn Freezing Solutions – IQF tunnel and plate freezers operating at −36 °C / −33 °F for maximum yield and product integrity.
  • Kami Tech Systems – Stainless-steel and aluminum food-processing equipment and vessel maintenance, built at Pier 90, Seattle.

Meet the KAPP Team

With headquarters in Iceland and production in Seattle, KAPP delivers chilling, freezing, and processing systems backed by 90 years of engineering excellence.

Our global team provides complete service and support — ensuring the cold chain never breaks from sea to store.

Booth: TBA

March 15–17, 2026

Thomas M. Menino Convention & Exhibition Center, Boston USA

Website: seafoodexpo.com/north-america

This page will be updated.

Date:
March 15, 2026
Region:
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Pacific Marine Expo 2025

November 20–22, 2025 · Seattle, USA

Lumen Field Event Center

www.pacificmarineexpo.com

Where the Cold Chain Never Breaks

KAPP will be exhibiting at Pacific Marine Expo 2025, the largest commercial marine trade event on the U.S. West Coast.

Join us in Seattle to explore how KAPP’s refrigeration and food-processing technologies are shaping a more sustainable and efficient future for the marine and seafood industries.

Together with our team at Pier 90, Seattle, we deliver advanced systems that maintain product quality, optimize energy use, and ensure the cold chain never breaks — from catch to consumer.

Innovation That Delivers Efficiency

Learn how KAPP’s combined expertise is driving cutting-edge solutions for the North American market.

Our portfolio integrates decades of engineering excellence from Iceland and Seattle, offering systems designed to improve yield, quality, and environmental performance.

Discover our technologies:

  • OptimICE® Liquid Ice System – Rapid, efficient cooling that keeps seafood at −0.5 °C / 31.1 °F without freezing.
  • RoteX™ Sub-Chilling™ & Thawing – Precise sub-zero chilling and controlled thawing that protect quality and extend shelf life.
  • IQF Tunnel & Plate Freezers – Compact, energy-efficient freezing systems for maximum yield and product integrity.
  • Kami Tech Solutions – Stainless-steel and aluminum processing equipment and vessel services from Pier 90, Seattle.

About Pacific Marine Expo

Each year, thousands of commercial mariners from across the West Coast and Alaska gather in Seattle to explore new technologies, gear, and innovations.

The expo features hundreds of exhibitors, a three-day education program, and networking events — bringing together the people who power the maritime and seafood industries.

Booth #639

November 20–22, 2025

Lumen Field Event Center, Seattle, WA

Date:
July 26, 2025
Region:
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A stainless-steel OptimICE® slurry ice machine displayed next to a teal banner reading “Data Doesn’t Lie: Why Fishermen Need to Rethink Chilling Systems – Performance Backed by Proof,” with the KAPP Skaginn Kami Tech logo.
A fishing vessel sailing on the ocean next to a teal banner that reads “Recent Research Reinforces: The Cold Chain Starts Onboard – Temperature Control from Deck to Dock,” with the KAPP Skaginn Kami Tech logo.
Slurry ice being poured into a tub filled with fish
Slurry ice chilling fish onboard with water flowing from a hose, alongside KAPP branding and the text “What’s Killing Your Catch Value? Science Says It’s Temperature. Smarter Chilling. Better Seafood.”
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Eskja pelagic plant to maximize its processing capacity GIF
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constant Flexible processing deck that ensures product quality GIF
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Ecofive Ship