ASI Group

About Us

ASI Group Ltd. (ASI) has been an industry leader in underwater inspection, maintenance and repair, and biofouling (mussel) monitoring and control services since 1987. Originally founded as Aquatic Sciences Inc. by a team of technical professionals, ASI has now grown to be much more. Our scope and depth of work has continually increased over the years, while our core business of marine inspections and mussel services remains consistent. Our strongest asset has been the ability to offer a full-service approach – from initial problem identification to the development and implementation of the appropriate solution. 

Our Purpose:

ASI is passionate about developing and delivering visionary turn-key solutions for our clients. Our purpose is to use our expertise in all areas of underwater surveys and inspections, maintenance, tunneling and mussel monitoring and control to create peace-of-mind for our clients. ASI’s success is a result of long-term and symbiotic relationships with valued clients while innovatively managing their non-core business.


Our Values:

  • Pioneering innovative solutions, saving our clients from shut downs that result in loss of business and money
  • Providing the highest standard in customer service by maintaining an approachable environment
  • Establishing long lasting relationships by putting our clients first
  • A company culture that is based on honesty, respect and integrity

Our History: Over 30 Years of Firsts

1987

Aquatic Sciences was created.

1990

Developed and patented the first North American water treatment program for the control of zebra mussels.

1991

Development of ASI’s first ROV for internal pipeline inspections.

1995

ASI first uses a remotely operated vehicle for long tunnel inspections, the ASI Mantaro with 10 km umbilical.

1996

First use of potash as a zebra mussel control agent in fire protection systems.

2002

Deployment of first totally autonomous vehicle for inspection of 71 km tunnel.

2006

First open-water zebra mussel eradication using potash.

2009

First manned dive in an irradiated environment in a Candu Nuclear facility.

2010

Development and operation of ROSEbud remote cleaning vehicle for Bruce Power.

2012

Developed first multibeam sonar array ROV tunnel inspection system allowing for full 3D modeling of flooded tunnels.

2012

Provided hyperbaric intervention planning, consulting and personnel/equipment support for the Spadina Subway extension project in Toronto, Canada.

2013

Developed first dredge spoils treatment system for discharge into surface waters

2015

Demonstration of underwater inspection technologies for dam assessment for BC Hydro. This project lead to an ongoing inspection

2015

Record setting deepest ROV tunnel dive at 576m and 9.7 km penetration in Peru.

2016

Inspection of critical potable water supply tunnel and application of  proprietary disinfection and cleaning protocol.

2017

Inspection of 20km long tunnel with tethered system, establishing new world record for longest penetration by a powered

2018

Autonomous survey of operational canal in high flows (2 m/sec) and GPS denied areas, 12.5 km long, 4.5

2019

Inspection in support of FERC licensing for major power utility; twin conduits, dual ROV operations acquiring high resolution 3D data for subsequent analysis and modeling, gate monitoring during closure operations (gates had not been fully closed for over 20 years).

2020

Completion of 5.7 km tunnel inspection in California using Falcon ROV on 10 km tether. Proprietary disinfection and cleaning protocols completed for potable water.