CPF biofouling investigations


  1. Zwicker, B.M.
  2. Pelletier, G.R.
  3. Porter, J.F.
Corporate Authors
Bedford Inst of Oceanography, Dartmouth NS (CAN) Dept of Fisheries and Oceans;Defence Research Establishment Atlantic, Dartmouth NS (CAN)
The seawater cooling systems on the Canadian Patrol Frigates (CPF) have been experiencing serious problems with marine fouling, primarily due to the ingestion of blue mussel (Mytilus edulis) Iarvae. Defence Research Establishment Atlantic Dockyard Laboratory (DREA/DL) has undertaken a development project to investigate the factors that govern the degree of the marine fouling problem and to devise solutions and systems to reduce or eliminate their occurrence. To control biofouling, many different techniques have been employed over the years with varying results. Some successful methods are under scrutiny due to their enviornmental effects. Any proposed solution must take into consideration the safety of the CPF crew, while being environmentally conscience and having minimal negative effects on non-target organisms. Research now focuses on finding methods that discourage or repel the settlement of biofouling organisms, rather than extermination. DREA/DL have constructed a seawater system that mimics some characteristics of the CPF auxillary seawater circulating system (ASWC), used to supply a source of cooling water to various onboard equipment. Studies using the DREA/DL seawater system have been condcuted on three different biofouling chemical treatments; hypochlorite, copper ion, and iodine. TRUNCATED
Chemical treatment;Seawater cooling system
Report Number
DREA-SR-2001-094-SES-IV-PAP-21 — Special Report
Date of publication
01 Oct 2001
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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