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December 2015 Issue

Enforcing Striped Bass
Fishery Law

In the Mid-Atlantic, NOAA’s Office of Law Enforcement (OLE) is raising awareness of the federal regulations governing striped bass in the U.S. Exclusive Economic Zone (EEZ) and increasing enforcement efforts.

NOAA OLE is joining state and federal marine law enforcement organizations to target vessels retaining and fishing for striped bass in the EEZ. Marine law enforcement officers, including OLE and the U.S. Coast Guard, will be ticketing fishermen who violate these regulations.


Underwater Survey
Of Greek Antiquities

A team of marine geophysicists from the Laboratory of Marine Geology and Physical Oceanography at the University of Patras has completed a survey off Methoni, Greece, conducted under the auspices of the Greek Ephorate of Underwater Antiquities (Ministry of Culture and Sports), with support from Kongsberg Maritime.

A number of historical shipwrecks, the town’s ancient submerged pier and harbor, as well as ruins of the submerged prehistoric town were mapped in 2D and 3D using the Kongsberg GeoSwath Plus Compact bathymetric sonar, the Kongsberg GeoChirp sub-bottom profiler, magnetometer and side scan sonar.

CARIS HIPS and SIPS will be used for bathymetric and side scan data post-processing, analysis and 3D visualization of the finds and of features of potential archaeological interest.


Decom Considerations
Related to Marine Growth

There are more than 1,500 registered offshore oil and gas installations in the North Sea, 470 of which are in U.K. waters with more than 10,000 km of pipelines and about 5,000 wells.

Over the next couple of decades, a growing number of redundant oil and gas installations will be taken out of service and decommissioned. Decommissioning must include the management and mitigation of any potential environmental impacts and risks, according to BMT Cordah. This includes the consideration of marine growth, which introduces a wide range of decom issues, including added weight to a structure, colonization by protected species, the potential for transfer of invasive species, and management of marine growth waste.

There are two species in the North Sea that affect the decommissioning process: Lophelia pertusa, a cold-water coral, and Sabellaria spinulosa, a reef-building polychaete worm. If either of these species is likely to be present, it is prudent to confirm or disprove their presence prior to undertaking decom operations.


Barrier Islands for
Coastal Resilience

Analyzing natural barrier islands could help make coastal infrastructure more sustainable and resilient from natural disasters, said Bechtel’s senior ports specialist, Marco Pluijm. Traditionally, marine infrastructure is designed based on studying trends and processes that are hard to predict.

Lessons learned from studying natural barrier islands, like Dauphin Island, Alabama, could also help to provide additional offshore facilities and assets for a number of stakeholders, such as homeland security, disaster relief, renewable energy, tourism, commercial fishing and wetland conservation.


Connection Systems for
MeyGen Tidal Energy

Hydro Group has secured a contract with Atlantis Resources to supply connection systems for the world’s most advanced multiturbine tidal stream energy development, the MeyGen project.

The 398-MW tidal array project in the Pentland Firth, Scotland, involves installation of four submerged turbines generating 6 MW, as well as the construction of all onshore support infrastructure.

Hydro Group will supply the complete export connection system for one of the tidal turbines and is finalizing details for the second phase of the project. Hydro Group will provide a single housing for a hybrid with a power output of 6.5 kV, incorporating the power and communication connection system, mechanical loading system, and fiber-optic and instrumentation lines.

MeyGen will be able to power 175,000 homes in Scotland from up to 269 tidal turbines secured to the seabed, with the first power to the national grid expected in 2016.


DONG Energy Behind
Largest Offshore Wind Farm

DONG Energy has decided to construct the 660-MW Walney Extension Offshore Wind Farm, located in the Irish Sea, approximately 19 km off the west coast of Britain.

Walney Extension is expected to be fully commissioned in 2018, at which time it will be the biggest offshore wind farm in the world, surpassing the 630-MW London Array Offshore Wind Farm.

Walney Extension will deliver electricity to more than 460,000 homes.

DONG Energy will use 40 8-MW turbines from MHI Vestas Offshore Wind and 47 Siemens 7-MW offshore turbines.


World’s First
Floating Wind Farm

Statoil has decided to build the world’s first floating wind farm: The Hywind pilot park offshore Peterhead in Aberdeenshire, Scotland.

Statoil will install a 30-MW wind turbine farm on floating structures at Buchan Deep, 25 km offshore Peterhead.

The wind farm will power about 20,000 households. Production start is expected late 2017.


Tech for Tracking
Illegal Fish Bombing

SA Instrumentation designed and built a “bomb listener” at the request of the Marine Conservation Society (MCS) in the U.K. to address the decades-old practice of fish bombing taking place in marine parks across Southeast Asia.

SA Instrumentation designed a bespoke product using three of its Decimus systems to collate the bomb noise in near-real time. A compass was built in, allowing enforcement rangers to identify the location of bombs.

The collaborative project, which also involves the Government of Hong Kong, aims to deter local fishermen in the Sabah region of Malaysia from detonating bombs.

The SA Instrumentation team will be part of a related film documentary in production.




2015:  JAN | FEB | MARCH | APRIL | MAY | JUNE | JULY | AUG | SEPT | OCT | NOV | DEC
2014:  JAN | FEB | MARCH | APRIL | MAY | JUNE | JULY | AUG | SEPT | OCT | NOV | DEC


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Sea Technology is read worldwide in more than 110 countries by management, engineers, scientists and technical personnel working in industry, government and educational research institutions. Readers are involved with oceanographic research, fisheries management, offshore oil and gas exploration and production, undersea defense including antisubmarine warfare, ocean mining and commercial diving.