Sea barrier
Revision as of 15:26, 8 January 2021 by S.tikkanen (talk | contribs)
A sea barrier is an anthropogenic structure which can fulfill different purposes: It can serve as part of a defensive structure, as a means to create a logistical choke-point for tax-collecting, or to divert currents and thus influence erosion and deposition patterns.
An underwater defence structure at Suomenlinna Sea Fortress, Helsinki, Finland. Copyright: Finnish Heritage Agency, photo. Maija Huttunen.
