Saving Seafood

New trawl net to cut costs and boost survey accuracy

May 29, 2025 — A collaborative sea trial aboard NOAA’s vessel Bell M. Shimada has set the stage for a more efficient and cost-effective approach to fishery surveys on the West Coast.

Fishing industry leaders joined NOAA Fisheries scientists in testing an innovative new trawl net designed to gather more accurate data in less time and at lower cost.

Developed in partnership with industry experts, the Multi-Function Trawl (MFT) net is engineered to combine two separate West Coast fisheries surveys that had previously relied on different nets. The Adjustable design allows a single vessel to “more safely gather more data in less time and at lower cost,” according to NOAA.

“The new trawl, which uses the same design features and technologies used by many fishermen, increases our confidence in the survey results,” Greg Shaughnessy, chief operating officer at Ocean Gold Seafoods in Westport, Washington, said. Shaughnessy, a long-time industry collaborator, became interested in the survey process after observing the sudden decline of sardines off the Northwest Coast in 2015. “I needed to understand how these surveys work,” he recalled. “You have to have the best available science to get the management right.”

Read the full article at National Fisherman

OPINION: Safeguarding Alaska offshore habitat and providing a path forward for trawling

September 27, 2024 — As commissioner of the Alaska Department of Fish and Game, I often hear concerns about the impacts of trawl gear used in Alaska’s pollock fisheries, most recently related to potential unobserved mortality of crabs and halibut in the Bering Sea. We know that pelagic trawls fishing for Alaska pollock are often operated close to, or in contact with, the seafloor. What we do not know is the extent of this contact or the potential impacts on bottom-dwelling species like crab and halibut and their habitat. These data gaps are concerning to Alaskans, and I want to highlight actions underway to understand and address the unintended consequences on seafloor ecosystems in areas that fishery managers and stakeholders have recognized as needing protection.

Alaska’s marine fisheries are universally recognized as a shining example of both bounty and sustainability. About 60% of domestically caught U.S. seafood comes from Alaska. Science-based management by the Alaska Department of Fish and Game, North Pacific Fishery Management Council, and NOAA’s National Marine Fisheries Service (NMFS) has proven to be the key to ensuring that Alaska’s fisheries continue to support good jobs, vibrant fishing communities and a healthy food supply for generations to come. But fishery management must be adaptive to changing biological and economic conditions, and declines in crab, halibut and other important stocks in recent years have heightened concerns about the impacts of bottom trawling.

When considering trawl fisheries, it’s important to distinguish between bottom trawls and pelagic trawls used in the pollock fishery. As the name implies, bottom trawls are specifically designed to catch fish at or near the seafloor. Pelagic trawls are designed to fish higher than bottom trawls and are typically used to target a single species. The best available information indicates that bottom trawls have a greater impact on seafloor habitat than pelagic trawls, and ADF&G, the Council and NMFS have closed large areas of the ocean off Alaska to bottom trawling to minimize these impacts. That said, some key species such as scallops can only be fished with bottom fishing gear.

Read the full article at Anchorage Daily News

CT innovator IDs illegal trawlers with AI and ears in the ocean

August 14, 2023 — With millions of dollars from venture capital investors, a Connecticut startup that emerged from the submarine industry is using artificial intelligence to pioneer new underwater technology, from tracking illegal fishing to protecting whales during construction of offshore wind farms.

Miles off the U.S. coast, Groton-based ThayerMahan is readying a nautical network of buoys and roaming sea drones to ID commercial fishing trawlers that may be operating illegally, whether in U.S. territorial waters or those of other nations where catch limits are abused routinely to put pressure on fish stocks.

Closer to home in partnership with Hydrotechnik-Luebeck based in Germany, ThayerMahan is assisting offshore wind developers with a system to “bubble wrap” wind turbine monopiles with curtains of sound-absorbing bubbles, in an effort to minimize disruptions for whales and other marine life. ThayerMahan is tracking whale positions to determine if any are swimming too close to turbine construction sites and is helping wind farm developers comply with federal environmental rules.

Mike Connor retired as a vice admiral overseeing the U.S. Navy’s submarine fleet to start ThayerMahan in 2016, seeing the need for a startup that could develop a networked system of underwater sensors to help the Navy identify vessels. Connor named the company for the naval power theorist Alfred Thayer Mahan, who was a major influence in the global naval buildup preceding World War I.

Read the full article at ctpost

Op-ed: What science says about the sustainability of trawling

September 26, 2022 — Ray Hilborn is a professor in School of Aquatic and Fishery Sciences at the University of Washington.

With the launch of several recent advocacy campaigns, bottom-trawling is squarely in the crosshairs of some environmental groups and media outlets that regurgitate their press releases.

There is no question that bottom-trawling has environmental impacts, as all food production does, but there is misinformation floating around about the true impact of bottom-trawling, especially in comparison to other types of fishing and food production. With campaigns like #BanBottomTrawling growing, I want to look at what the science says about the sustainability of bottom-trawling.

Read the full article at SeafoodSource

URI professor part of a worldwide study on impacts of bottom trawling on health of seabeds

January 10, 2021 — A worldwide study on the impacts of bottom trawling, which accounts for a quarter of the world’s seafood harvest and can negatively affect marine ecosystems, has found that seabeds are in good health where trawl fisheries are sustainably managed.

The research published in Proceedings of the National Academy of Science (PNAS) by a team including co-author Jeremy Collie, Professor of Oceanography at the University of Rhode Island, builds on recent international collaboration in this field and is the first worldwide study of its kind. It brings together data from 24 large marine regions around the world to establish a relationship between distribution and intensity of trawling activities and the biological state of seabeds.

Read the full story at The University of Rhode Island

 

Finders keepers: New trawl technology helps fleets fish smarter and managers track biomass, despite covid disruptions

September 15, 2020 — In trawl fisheries, vessels usually spend costly amounts of time and fuel searching for fish. Even with advanced technology, the cost of finding fish comes with the price of investment. To increase efficiency, Kongsberg Maritime of Norway has developed an unmanned surface vehicle that can hunt for fish at a fraction of the cost of a fully manned fishing vessel.

“The vessel is equipped with high-definition SX95 omnidirectional sonar,” says Richard Mills, head of marine robotics sales at Kongsberg. “Then there is a moon pool in which we can put other equipment. We just put an EK80 echosounder in one for a company we can’t name, and we are hoping to demonstrate it next year for NOAA.” According to Mills, the USV can search large expanses of ocean and transmit data to land-based receivers and fishing vessels. “We sit down with our customers and look at cost benefits,” says Mills, noting that the USV could operate for as little as 15 percent of a manned vessel’s crew costs and fuel costs.

The 26.5-foot USV has a 7.3-foot beam and draws 2.3 feet. For receiving commands and transmitting data, the vessel has a mast that reaches 14.4 feet above the sea surface. The vessel can run autonomously or be operated from a laptop PC or radio control with data telemetry via a Kongsberg’s K-MATE control system, with communication through Maritime Broadband Radio and Iridium satellite (VSAT optional).

Read the full story at National Fisherman

Witch Flounder Trimester Total Allowable Catch Area Closed to Common Pool Vessels Fishing with Trawl Gear

April 12, 2019 — The following was released by NOAA Fisheries:

Effective at 0845 hours on April 12, 2019, statistical areas 512, 513, 514, 515, 521, 522, and 525 are closed for the remainder of Trimester 3, through April 30, 2019. During this closure, common pool vessels fishing with trawl gear may not fish for, harvest, land, or possess regulated multispecies in or from this area. The closure is required because 90 percent of the Trimester 3 Total Allowable Catch (TAC) for witch flounder is projected to have been caught. This area will reopen at the beginning of fishing year 2019, at 0001 hours, May 1, 2019.

If you have crossed the vessel monitoring system demarcation line and are currently at sea on a groundfish trip, you may complete your trip in all or part of the closed areas.

For more information read the rule as filed in the Federal Register or the bulletin as posted on our website.

Read the full release here

Marine life worse off inside ‘protected’ areas, analysis reveals

December 27, 2018 — Destructive trawling is more intense inside official marine sanctuaries, while endangered fish are more common outside them, a startling analysis of Europe’s seas has revealed.

It shows that far from conserving sealife, many legal marine protected areas (MPAs) are being damaged by industrial fishing. The work has exposed “the big lie” behind European marine conservation, experts say, with most MPAs completely open to trawling.

The researchers were able to assess the activity of fishing vessels in great detail thanks to satellite tracking equipment that is now compulsory on ships. They compared this with scientific data on the health of sea areas and looked at more than 700 MPAs, covering 16% of Europe’s territorial waters. In total, MPAs cover 29% of Europe’s waters.

This revealed that commercial trawling activity was on average almost 40% higher inside MPAs than in unprotected areas. Furthermore, endangered and critically endangered fish species such as sharks and rays were five times more abundant outside the MPAs.

“It should be the reverse,” said Prof Boris Worm, at Dalhousie University in Canada, who led the research. “When something is called a protected area, it actually needs to be protected. We know that when areas are actually protected they deliver: species recover, biodiversity increases and fisheries benefit as well, as fish become more abundant and spill outside these areas.

Read the full story at The Guardian

North Pacific Council Looks at Limits for Cod Deliveries to Motherships in the Bering Sea

June 21, 2018 — SEAFOOD NEWS — Twelve years ago Amendment 80 was adopted by the North Pacific Fishery Management Council to allocate several non-pollock groundfish among trawl sectors, and help form cooperatives in that sector. The amendment covered dozens of competing concerns and succeeded in striking a balance that has worked well in the last decade.

But Amendment 80 was silent on whether the catcher/processors (CPs) in that fleet could act as motherships in the Bering Sea limited access cod fishery.

Last winter, AM80 CPs acted as motherships taking deliveries from their own catcher vessels and others in a reduced allocation cod fishery. That resulted in an increased percentage in the amount of Pacific cod delivered to the AM80 sector, an increase in the number of catcher vessels delivering Pcod to motherships, and a decrease in the amount of cod delivered to shoreside processing facilities.

To correct this, the Council is considering options that would restore balance to the shore-based and off-shore processing facilities. In the process of understanding how best to address that, a latency issue has emerged.

The Council revised its problem statement at their June meeting in Kodiak to reflect that.

“Information shows a large number of AFA endorsed vessels are not participating, but whose catch history contributes to the AFA Pacific cod sideboard in the Bering Sea trawl cod fishery,” the new statement reads.

“Despite a high level of latency, the pace of the fishery has increased shortening the season, resulting in decreased ability to maximize the value of the fishery and negatively impacting fishery participants. Additional entrants could exacerbate these issues and threaten the viability of the fishery. The Council is considering options to improve the prosecution of the fishery, with the intent of promoting safety and increasing the value of the fishery.”

Prior to the Council’s early June meeting, there were four Alternatives on the table. Now there are six. As always, Alternative 1 is status quo.

Alternative 2 has two Options, the first of which was revised at the June meeting to allow an AM80 CP may take directed fishery deliveries of Pcod from catcher vessels if the CP acted as a mothership and received targeted Pacific cod deliveries during 2015-2017, with sub-options of in any one of those three years, in any two years, or in any three years. Those sub-options will be analyzed and considered by the Council later this year. A second Option under Alternative 2 is for non-AM80 CP acting as motherships during 2015-2017.

Alternative 3 was also revised at the June meeting to clarify that the allocation will be set for “A” Season and “B” Season and apply to all catcher processors limited by the action. Options for what final allocations will be included the percentage of Bering Sea subarea Pacific cod delivered to CPs acting as motherships, relative to the total BSAI Bering Sea subarea catcher vessels trawl catch between a variety of time periods ranging from 2008 to 2017.

A sub-option was added to Alternative 3 that would exempt a CP from the sideboard limit if it had received deliveries in 7 or more years from the BSAI cod trawl fishery and the catch delivered would not accrue to any sideboard limit established for CPs when acting as a mothership.

Alternative 4 was modified to clarify that both the catch accounting system and the fish ticket target definition would be considered when determining which catcher vessels would be eligible to deliver BSAI Pcod in the future.

An option was also added to exempt the 8 severable Aleutian Islands trawl endorsements on LLP licenses, established under BSAI Amendment 92, from the proposed BSAI landings requirements for trawl CVs.

The two new Alternatives went further to include American Fisheries Act, or the BSAI pollock fleet.

Alternative 5 would establish American Fisheries Act and non-AFA sector allocations for the cod “A” season. Specific allocation percentages or years to consider were not determined as part of the June motion.  Council staff will provide information on that and on ways for the non-AFA sector to develop a cooperative or cooperatives to fish their Pacific cod allocation.

Alternative 6 was added to ensure that AM80 CPs that have been replaced and no longer have an Amendment 80 quota share permit or an Amendment 80 LLP license would be prohibited from acting as a mothership for Pacific cod in the future. The restriction would apply to both the BSAI and GOA.

Initial review of the analysis is scheduled for the Council’s February 4-12, 2019 meeting in Portland, OR.

This story was originally published on SeafoodNews.com, a subscription site. This article is reprinted with permission.

Hearing on Cape Cod for rules to limit herring trawlers

June 19, 2018 — For over 15 years, Cape and other small-boat fishermen in the Northeast have lobbied against the large vessels of the herring fleet, saying they are too efficient at catching fish. They claim these vessels remove such large amounts of herring from an area that there is nothing left to attract cod, striped bass, bluefish, tuna and other species that eat herring close enough to shore for local fishermen to catch them.

These concerns resulted in a proposed regulation from the New England Fishery Management Council, known as Amendment 8 to the herring fishery management plan, which bans these vessels from inshore waters. A public hearing on the amendment is scheduled Tuesday in Chatham.

Right now, these vessels of around 120-150 feet in length, frequently towing huge nets between two ships, can come within 3 miles of the Cape coastline. Fishermen and the public will have a number of options to comment on, including herring trawler bans that extend from 6 to 50 miles from shore. A few months ago, local fishermen and environmental groups were unsure how far offshore they wanted to push large herring trawlers, but recent preliminary reports indicating the herring stock may be in trouble have united many in the fishing and environmental community to press for the maximum: a 50-mile buffer zone. They say this measure not only helps them catch fish in their traditional fishing grounds, but also helps the herring stock recover.

“If you had a bigger zone of 50 miles, you would encompass spawning sites that herring use,” said Peter Baker, director of U.S. Oceans, Northeast, for The Pew Charitable Trusts. “The benefit to the herring fishery is a place, a pretty huge one, where they could live without being chased down by industrial fishing trawlers, the most efficient fishing vessel around.”

A second component of the hearing, hosted by the New England Fishery Management Council, would allow for changes in the annual allowed catch dependent on how the stocks are doing.

Read the full story at the New Bedford Standard-Times