Figure 2

(A) Zoomed in bathymetry of the seafloor within the Picton anchorage (for location of figure see Fig. 1B). Scours and abrasion zones are labelled and the location of Profile A-A’ is annotated. Profile A-A’ shows the bathymetric profile where the penetration of one scour on the seabed is observed, of up to 5 m wide and 80 cm deep. (B) Shaded relief image of the seafloor showing a “broomstick-like” feature (interpretation in black dashed-line), reflecting the preservation of the anchoring gear impacting the seabed, and abrasion marks relating to the movement of the vessel (and chain scope) whilst on anchor. (C) Schematic representation of how anchoring gear (including the anchor and the chain scope) impact the seabed leaving scours, abrasion zones and “broomstick-like” features.