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Learn about controlling hull biofouling to reduce invasive aquatic species transfer. Understand guidelines sections, AFS installation, maintenance, and more to protect marine ecosystems.
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2011 Guidelines for the Control and Management of Ships’ Biofouling to Minimize the Transfer of Invasive Aquatic Species James River Reserve Fleet
Relevance of Hull Biofouling • Shipping identified as a major vector of organism transfers on a global scale • Bias in ecological research toward ballast-mediated transfers • Very little data exist on hull biofouling • Hull fouling transfer of organisms has been historically important • Photo by Smithsonian Environmental Research Center, http://www.serc.si.edu • Photos by Aquatic Bioinvasion Research and Policy Insitiute, Portland State University, http://www.clr.pdx.edu
IMO Activity • MEPC 56 (2007) – high priority item assigned for inclusion in the work programme of BLG • BLG 13 (2009) - agrees to develop Guidelines for the control and management of ships’ biofouling to minimize the transfer of invasive aquatic species • Adopted 15 July 2011, Resolution MEPC.207(62)
Biofouling is influenced by • Design and construction, particularly the number, location and design of niche areas • Operating profile • Places visited and trading routes • Maintenance history
Guidelines Sections • Biofouling Management Plan • Measures to be undertaken on the ship • Record Book • Records of practices implemented • AFS Installation and Maintenance • Procedures for Ship Maintenance & Recycling Facilities • In-water Inspection and Cleaning • Design and Construction Considerations • Dissemination of Information • Training and Education (masters and crew)
The Biofouling Management Plan Should be specific to each ship and kept with documentation. Should address: • Details of AFS & operational practices/treatments used, including those for niche areas • Hull locations susceptible to biofouling, schedule of planned inspections, repairs, maintenance and renewal of AFS • Details of the recommended operating conditions and practices suitable for the chosen AFS • Details relevant for the safety of the crew including details of the AFS
Biofouling Record Book Should record details of all inspection and biofouling management measures undertaken. Includes: • Details of AFS and operational practices used, where/when installed, areas coated, maintenance, etc. • Dates/locations of dry dockings/slippings and any measures taken to remove biofouling or renew/repair AFS • Dates/locations of in-water inspections, results, corr. actions • Dates/details of inspections of internal sea water cooling systems • Details of when ship operated outside of its normal profile, including layup or long periods of inactivity
AFS Installation & Maintenance AFS and operational practices are the primary means of BF prevention and control for the hull and niche areas. Guidelines provide: • Factors to consider when choosing an AFS and for installing, reinstalling or repairing the AFS (such as surface preps and care for sea chests).
Procedures for Maintenance and Recycling Facilities • Capture biological material removed • Treat all biological material removed • Schedule arrivals to/departures from facilities to minimize risks • Remove all fouling while in dry dock
80 f • 80 f • Rudder • Propellers • Propeller Shaft Sampling the hull and survey methods • A • D • B • E • C
Survey Methods (Contd.) • C • A • D • B
x • x • x • x • x • x • x • x • x • x • x • x • x • x • x • x • 4 • 3 • 2 • 1 • 8 • 7 • 6 • 5 • x • 9 • x • x • x • x • x • x • x • 9 • x • x • x • x • x • x • x • x • x • x • x • x
Beaumont Hulls • A • C • B • D • Underwater photographs ~12x18 cm
Pre-Cleaning Hull Status(frame 14 on hull) Waterline Keel
Effects of Hull Cleaning • Number of Species per sample (mean ± SE) • Abundance per sample (mean ± SE) • Percentage Cover (mean ± SE)
Where do we go from here? Develop ISO standards to be developed to assist industry in implementing elements of the Guidelines • In-water survey methods to determine effectiveness of husbandry actions? • Other?