Use double hulls to prevent oil spills
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
Background information and definitions
Oil spills can cause serious harm to marine and freshwater mammals (Helm et al. 2014). Double hulls, where the bottom and sides of ships have two layers of watertight surfaces, can be used to prevent oil spills and have been required in some countries since the 1990s (Alcock 1992). Double hulls can reduce vessel damage to tankers when involved in accidents, and their use has been shown to significantly reduce the number of accidental oil spills (Glen 2010, Yip et al. 2011).
Alcock T.M. (1992) "Ecology Tankers" and the Oil Pollution Act of 1990: a history of efforts to require double hulls on oil tankers. Ecology Law Quarterly, 19, 97–145.
Glen D. (2010) Modelling the impact of double hull technology on oil spill numbers. Maritime Policy & Management, 37, 475–487.
Helm R.C., Costa D.P., DeBruyn T.D., O'Shea T.J., Wells R.S. & Williams T.M. (2014) Overview of effects of oil spills on marine mammals. Pages 455–475 in: Fingas M. (ed.) Handbook of Oil Spill Science and Technology. John Wiley & Sons, Inc.
Yip T.L., Talley W.K. & Jin D. (2011) The effectiveness of double hulls in reducing vessel-accident oil spillage. Marine Pollution Bulletin, 62, 2427–2432.