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Experience

Established in 1982, we have earned an impressive reputation for successful, innovative solutions to complex engineering and operational problems.  Our teams specialize in projects that require a creative approach and the application of sophisticated instrumentation.  As an industry leader, many companies turn to us for consulting from international, industrial, military and academic organizations.

Williamson & Associates, Inc. offers a spectrum of seafloor mapping sonar systems that is unmatched by any other organization in the world. From regional geological mapping at the rate of 10 square nautical miles per hour to small target search to high resolution sidescan/swath bathymetry surveys,

Williamson & Associates has the systems, personnel and proven techniques to meet the requirements of any seafloor investigation.

 

Some of Williamson & Associates Clients
AGIP AMOCO BHP BP Chevron El Paso Enron ESSO Exxon Leviathon Marathon Mariner Energy Mobil Petro Canada Samedan Shell	Alcatel AT&T Cable & Wireless/Global Marine EGS FLAG General Communications Inc. International Telecomms ItalCable KDD NTTI Teleglobe Telstra TE Subcom NEC CH2M Hill Lockheed Martin	Alaska Fish & Game Environmental Protection Agency Army Corps of Engineers King County NOAA Oregon State University Pacific Geoscience Center University of Washington United States Coast Guard United States Navy Nautilus Minerals Placer Dome Rio Tinto SAIC Tatham Unocal Williams Gas

 

Project List

 

OFFSHORE PIPELINE AND ENGINEERING SURVEYS
CAPITAL SIGNAL	Petro Canada BLK-22 Well Site Survey, Trinidad / Tobago (2005-6)	EdgeTech 4200
CHEVRON EXPLORATION	Hurricanes Katrina & Rita Damage Assessment, GOM (2005)	AMS 120 & SM30
CHEVRON TEXACO	Nigeria Agbami Site/Flowline Survey, with Gardline (2004)	AMS 120 & AMS60
EL PASO LNG NY	Harbor/NJ Pipeline Route for offshore LNG terminal (2002-3)	Various
MARINER ENERGY	Swordfish Flowline Survey, GoM (2002)	AMS120
ENRON	Calypso Pipeline Survey, Pt. Everglades to Freeport (2001)	AMS120
EXXON	Angola Block 15 Site/Pipeline Survey, with Gardline (2001)	AMS60
SAMEDAN	MariB and NOA Prospects, Site/Pipeline Survey (2000)	AMS120
SHELL	Pre-Drilling Site Survey, Gulf of Mexico (2000)	SeaMARC 1A
BP/AMOCO	Crazy Horse Wellsite/Pipeline Survey, GoM (2000)	AMS120
BP/AMOCO	Holstein Wellsite/Pipeline Survey, GoM (2000)	AMS120
MARINER ENERGY	King Kong-Allegheny Pipeline Survey, GoM (2000)	AMS120
WILLIAMS GAS	Georgia Straits, British Columbia, Canada (2000)	AMS120
EXXON	Mica Pipeline Route Survey, Gulf of Mexico (1999)	AMS120
SHELL	King Prospect, Site/Pipeline Route Survey, GoM (1999)	AMS120
SPIRIT ENERGY (UNOCAL)	Pre-Drilling Site Survey, Gulf of Mexico (1998)	SeaMARC 1A
VASTAR	Pre-Drilling Site Survey, Gulf of Mexico (1998)	AMS60
WILLIAMS GAS	Gas Pipeline Route Survey, B.C., Canada (1998)	AMS120
AMOCO	King’s Peak, Infield pipeline Route Survey, GoM (1998)	AMS60
BP/SHELL/MARATHON	Troika Pipeline Tow Route Survey, Gulf of Mexico (1997)	AMS120
BP/SHELL/MARATHON	Troika Pipeline Route Survey, Gulf of Mexico (1996)	AMS120
SHELL/WFS	GC205/300 Pipeline Route Survey, Gulf of Mexico (1996)	AMS120
TATHAM	Pipeline Tow out Route Survey, Gulf of Mexico (1995)	AMS150
AGIP	Pipeline Pre-lay Route Survey, Gulf of Mexico (1995)	AMS150
LEVIATHAN	Pipeline Pre-lay Route Survey, Gulf of Mexico (1995)	AMS150
ESSO	Bass Canyon, Australia, Digital Terrain Model (1995)	AMS60
BHP	Minerva Pipeline Route and Site Survey, Australia (1995)	AMS150
ENSERCH	Pipeline Tow out Route Survey - GB388, GoM (1995)	AMS120
OMAN OIL COMPANY	Oman to India Gas Pipeline Route Survey, Indian Ocean, (1994)	AMS60
BRITISH PETROLEUM	Deep Water Site Survey, Scotland (1990)	AMS120
EXXON	Zinc & Alabaster Geohazard Survey (1990)	AMS120
MOBIL	East Coast Continental Slope Site Survey (1990)	AMS120
EXXON	Heritage Site Survey, Santa Barbara Channel (1989)	AMS120
EXXON	Pipeline Route Survey, Santa Barbara Channel (1988)	AMS150
AMOCO	Gulf of Mexico Site Survey (1987)	SeaMARC 1A

 

MARINE CABLE ROUTE SURVEYS
L3 MariPro / Univ. of Wash.	RSN, Fiber Network, Oregon / Juan de Fuca Plate (2010)	EM120, EM710, AMS-60, CPT
TYCO TELECOMMUNICATIONS	UNITY, Trans Pacific, US to Japan (2008)	R-8160, MR1, EM120, AMS120
TYCO TELECOMMUNICATIONS	TPE2A, Segment 3J, Shin Maruyama – Honshu to BU, (2008)	R-8160, EM302, AMS-120
GCI	Seafast Extension, offshore Ketchikan, Alaska (2007)	RESON 8160 MB
EGS / TYCO MARINE	TPE Cable Nearshore, Nedonna Beach, Oregon (2007)	EdgeTech 4200, Mag
GLOBAL MARINE	APCN2 China-Indonesia (2000)	C-BASS 1 & 2
ALCATE	FLAG PACIFIC Alaska-California (2000)	REDAS 1, CPTV
GLOBAL MARINE	EAST ASIA CROSSING Hong Kong-Korea-Japan (2000)	C-BASS 1
GLOBAL MARINE	UK-EIRE Irish Sea (1999)	C-BASS 2
TYCO MARINE	HIBERNIA N. America Approaches (1999)	REDAS 1, CPTV
ALCATEL	FLAG ATLANTIC European Approaches (1999)	REDAS 2, MCPT
ALCATEL	FLAG ATLANTIC N. America Approaches (1999)	REDAS 1, CPTV
CABLE & WIRELESS	MAYA Florida-Central America-Colombia (1999)	C-BASS 1
TYCO MARINE	AMERICAS II Florida Strait (1998)	AMS120
INTERNATIONAL TELECOM	SUNOQUE St. Lawrence Waterway, Quebec (1998)	AMS120
CABLE & WIRELESS	UK-GERMANY 6 North Sea (1998)	C-BASS 2
CABLE & WIRELESS	CHINA-US Taiwan-China (1998)	AMS120/C-BASS 1
CABLE & WIRELESS	CHINA-US Korea-Japan (1997)	AMS60/C-BASS 2
KDD/CABLE & WIRELESS	SEA-ME-WE 3 Segment 4, Singapore-India (1997)	AMS150/C-BASS 2
KDD/CABLE & WIRELESS	SEA-ME-WE 3 Segment 5, India-Africa (1997)	AMS120/C-BASS 1
CABLE & WIRELESS	Power Cable Route Survey France-Jersey-Guernsey (1997)	C-BASS 1
NTTI JAPAN TELECOM	Inter-Island Route Survey Hokkaido-Honshu, Japan (1996)	AMS120/AMS60
TELSTRA	JASURAUS Survey Australia - Indonesia (1994)	AMS120
NTTI / WOSL	FLAG Survey Japan - Korea (1994)	AMS120
TELECOM AUSTRALIA	BS-1 Cable Route Survey, Bass Strait (1993)	AMS150
TELEGLOBE CANADA	CANUS-1 New Jersey - Halifax (1992)	AMS60
STC SUBMARINE SYSTEMS	CANTAT-3 Cable Route Survey, Denmark-Canada (1992)	AMS120
ITALCABLE	COLUMBUS II Continental Approaches Mexico-Italy (1992)	AMS120
AT&T	TAT 10/11 North American Approaches (1991)	AMS120

 

HYDROGRAPHIC, OFFSHORE MINING, AND MARINE ENGINEERING MARINE GEOPHYSICAL SURVEYS
PND Engineers	Juneau, Alaska Harbor Hydrographic and Geophysical survey for new cruise ship terminal (2010)	Reson 7125, EdgeTech DSS2000 SSS/SBP, Applied Acoustics Boomer SBP, IXSEA GAPS USBL, Phantom HDII ROV
NOAA / NOS	Southern Penobscot Bay, Maine, Multibeam Survey, NOS Sheet H12256, Project(s) OPR-A366-KR-10, Precision Multibeam Echosounder Survey. (2010)	EM3002
NOAA / NOS	Central Puget Sound Multibeam Survey, NOS Sheet(s) H12050-H12053 Project(s) OPR-N360-KR-09 and OPR-N395-KR-09, Precision Multibeam Echosounder Survey. (2009)	Reson 8101, EM3002
NOAA / NOS	Oak Harbor to Saratoga Passage, NOS Sheet H11801 Project S-N915-KR-08, Precision MBES and SSS. (2008)	EM3002, C3D SSS, Reson 7125
TACOMA NARROWS CONSTRUCTORS	Old Tacoma Narrows Bridge “Galloping Gertie” historical wreckage delineation sonar / ROV survey (2007)	EM3002, 1624 SSS, Phantom ROV
NAUTILUS MINERALS	Polymetallic sulfide survey offshore Papua New Guinea 2007)	AMS-60, C-CASS
MARINE GEOSOLUTIONS & RIO TINTO	Titanium / Ilmenite Sands survey, Richards Bay, Republic of South Africa (2007)	C-BASS Induced Polarity
PLACER DOME	Polymetallic sulfide survey off Papua New Guinea (2005)	AMS 60, Mag Grad C-BASS, Gravity, Dredge
NOAA/SAIC	Hydrographic Surveys off AK NJ and LA (2004-5)	Reson MB / Klein SSS
KING COUNTY/CDM CORP	Brightwater Outfall Geophys/Geotech Survey (2003)	AMS120/CPTV
ACOE/SHANNON WILSON	White River Seismic Refraction Survey (2002)	Refraction
LOCKHEED MARTIN	Environmental Survey, Offshore Israel (2001)	AMS 120
ACOE/R&M CONSULTANTS	Harbor Dredging Survey, False Pass, AK (2001)	Subbottom
ACOE PORTLAND	Harbor Improvement Survey, Brookings OR (2000)	EG&G SSS
ACOE PORTLAND	Yaquina Bay Disposal Site Survey, Newport OR (2000)	EG&G SSS
CH2M HILL / CHELAN PUD	Rocky Reach Dam Fish Bypass (2000)	Geoacoustics SSS
ACOE/R&M CONSULTANTS	Wrangell Harbor, Alaska (2000)	Subbottom
TACOMA NARROWS CONST.	Tacoma Narrows, Washington (1999)	AMS150
ACOE/KLEINFELDER	Columbia River Survey from Cathlamet to Portland (1999)	AMS150
OREGON STATE UNIV.	Methane Hydrate Mapping Survey, US West Coast (1999)	SM30
ALASKA FISH & GAME	Offshore Deep Water Fish Habitat Survey (1998)	AMS120
JAPANESE GOVERNMENT	Coring of subsea lava flow, Japan (1997-98)	BMS
NOAA/USGS	Research Survey of Juan de Fuca & Gorda Ridges (1996)	AMS60
ALASKA FISH & GAME	Offshore Deep Water Fish Habitat Survey (1996)	AMS60
OREGON STATE UNIV.	West Coast Continental Slope, Eastern Pacific (1994)	AMS150
OREGON STATE UNIV.	Juan de Fuca Ridge, Pacific Ocean (1993)	SeaMARC 1A
EXXON	Reservoir Modeling Survey, Gulf of Mexico (1992)	SeaMARC 1A
SAIC MARIPRO US	Navy Testing Range Survey, Alaska (1991)	AMS120, ROV
U.S. GEOLOGICAL SURVEY	Deep Water Research Survey, Gulf of Mexico (1990)	SeaMARC 1A
PACIFIC GEOSCIENCE CTR	Deep Water Research Survey, N. Pacific (1990)	SeaMARC 1A
U.S. NAVY	Submarine Tracking Facility Survey, Alaska (1987)	Various
UNIV. OF WASHINGTON	Deep Water Research Survey, N. Pacific (1988)	SeaMARC 1A
NOAA	Deep Water Research Survey, N. Pacific (1987)	SeaMARC 1A

 

OFFSHORE SEARCHES AND RECOVERIES
Queensland Government. Australia	Continental Slope (300m – 4000m) search for the shipwreck “Centaur”, Brisbane, Australia (2009)	SM-30, AMS-60
Deep Six LLC	Deep ocean (5000m) target search, North Atlantic (2009)	SM-30, AMS-60
ECO-OLAS Panama	Search for shipwreck off of Panama (2009)	AMS-60, Benthos 1624
SYDNEY FOUNDATION	Search for HMAS Sydney and Kormoran, Indian O. (2008)	SM30, AMS60
JASCO/SHELL	Chukchi Sea recovery of ocean bottom hydrophones (2007)	Phantom ROV
ABELE FAMILY	Search for USS Grunion off Kiska (2006)	SM30, AMS60
SUBSEA RESOURCES PLC	Search for shipwreck off France (2005)	SM30
DISCOVERY CHANNEL	Search for USS Indianapolis, Central Pacific (2000)	SM30
HOWLAND LANDING	Search for Amelia Earhart’s Airplane, Central Pacific (1999)	SM30
ISRAEL MIN. OF DEFENSE	Search for INS Dakar, Mediterranean Sea (1999)	AMS60
OREGON STATE UNIVERSITY	Search for lost oceanographic instruments, Oregon (1998)	Sidescan, ROV
GLOBAL DIVING	Search for lost construction equipment, Puget Sound (1995)	SeaMARC 1A
UNIV. OF WASHINGTON	Recovery of current meters, Barents Sea (1992)	ROV
WASH. ST. DEPT. OF TRANS.	Survey of bridge anchors and cables, Seattle (1992)	AMS60
COMMERCIAL CLIENT	Shipwreck Search, Eastern Atlantic (1992)	SeaMARC 1A
U.S. COAST GUARD	Container/Arsenic Barrel Search, New Jersey (1992)	SeaMARC 1A
GLOBAL DIVING	Search for Sunken Yacht, Puget Sound (1992)	Sidescan, ROV
GLOBAL DIVING	Search for lost anchors, Puget Sound (1992)	ROV
WASH. ST. DEPT. OF TRANS.	Surveyed wreckage of Sunken Bridge, Seattle (1991)	ROV
U.S. GOVERNMENT	Search for radioactive waste drums, California (1990)	SeaMARC 1A
CANADIAN AIR FORCE	Search for wreckage of CF-18, N. Pacific (1990)	SeaMARC 1A
LOCKHEED	Search for Trident Missile Parts, Cape Canaveral (1988-9)	SeaMARC 1A
COLUMBUS AMERICA	Search for SS Central America, W. Atlantic (1986)	SeaMARC 1A

 

OCEAN ENGINEERING DEVELOPMENT PROJECTS
NGK / JOGMEC, Japan	Construction of a wireline seafloor coring system capable of 50m cores length in water depths to 4000m for use in undersea mineral exploration and methane hydrate research.	(2010 - ongoing)
CANADIAN FISHERIES, TOW SLED	Design and construction of a 3000m rated towed camera sled system designed to photo mosaic fish habitats	-2008
WILLIAMSON & ASSOCIATES, INC	Cable operated Camera and Sensor System (C-CASS) for follow-on investigation work off of Papua New Guinea	-2007
NIOT, INDIA	Construction of a wireline seafloor coring system capable of 100m cores in rock to water depths of 3000m	(2007 – ongoing)
DEEP OCEAN R&D AGENCY, JAPAN	Construction of a Seafloor Rock Coring System for obtaining 20 meter core samples in water depths to 6000 meters	(2004-5)
SAGE-WILLIAMSON	Development of 2 Resistivity Data Acquisition Systems (REDAS2500) for geophysical investigations of the top 2-5 meters of seafloor sediments in 2500 m water depths	-1999
WILLIAMSON & ASSOCIATES, INC.	Development of a combined CPT/vibrocorer geotechnical survey tool for taking 3 meter tests and samples to 2000 m water depths	-1998
GEOLOGICAL SURVEY OF JAPAN	Development of 6000 m Deep Tow Chirp Sub-Bottom Profiler	(1998/99)
BENTHIC GEOTECH / UNIV. OF SYDNEY	Construction of Portable Remotely Operated Drilling System (PROD) capable of obtaining 100 meter rock and sediment cores in water depths to 2500m	-1998
CABLE & WIRELESS	Construction of C-BASS 2	-1997
CABLE & WIRELESS	Construction of a Cable Burial Assessment Survey System (C-BASS 1) with video, resistivity, cone penetrometer and multi-frequency acoustic profiler	-1996
INTEC	Developed Enhanced Under Arctic Ice Seafloor Mapping Sonar System	-1996
METAL MINING AGENCY OF JAPAN	Construction of a Seafloor Rock Coring System (BMS) for obtaining 30 meter core samples in water depths to 6000 meters	-1995
NATIONAL SCIENCE FOUNDATION	Conducted Feasibility Study for a Remotely Operated Seafloor Rock Drill Prototype with Extended Coring Capabilities, Phase II	-1995
CHINA OCEAN MINERAL RESOURCES	Two GeoMAP Sonar Processing Systems	-1995
NATIONAL SCIENCE FOUNDATION	Conducted Feasibility Study for a Remotely Operated Seafloor Rock Drill Prototype with Extended Coring Capabilities, Phase I	-1993
INTERNATIONAL DEEP SEA SURVEY	Developed GeoMAP Sonar Data Image Processing System	-1993
NOAA	Construction of a Deep Sea Sediment Re-suspension System for a manganese nodule mining environmental impact study	-1991
ARCO	Developed Under Ice Seafloor Mapping Sonar System	-1991
UNIV OF WASHINGTON	Construction of a Deep Sea Rock Coring Drill	-1990
NOAA	Conducted Seafloor Hard Rock Sampling System Feasibility Study	-1987
COLUMBUS-AMERICA	Construction of SeaCLOPS, a 6000 meter Deep Sea Video System	-1987
NATIONAL SCIENCE FOUNDATION	Conducted Deep Sea Coring Drill Feasibility Assessment	-1984

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