Module 17 - Marine Environment
Responsible Anchoring
Seagrass provides habitat, nursery areas, coastal protection and carbon storage. Current MMO guidance explains that an anchor and chain can uproot plants, expose roots, leave scars and fragment a bed. The risk is not only the point where the anchor lands: a swinging yacht can sweep chain across a wider area and a dragging anchor can extend the damage.
Before arriving, check current charts, notices, harbour information and available habitat mapping. Respect formal or voluntary no-anchor zones and use an appropriate visitor or advanced mooring system where provided. A mooring is not automatically suitable merely because it is empty; confirm its permission, capacity and condition in the normal way.
If anchoring is allowed and necessary, select a mapped or visibly clear bare substrate with enough depth, shelter, holding and swinging room. Lower the anchor under control, avoid searching for a clear patch by dragging, monitor the set and recover vertically as far as conditions and the boat allow. Safety remains decisive: habitat protection does not require accepting an unsafe berth, but it does require planning another safe location rather than knowingly damaging the bed for convenience.
- Check habitat mapping, no-anchor measures and local guidance before arrival
- Use a suitable authorised mooring where provided
- Choose a safe clear substrate with adequate holding and swinging room
- Lower, monitor and recover the anchor to minimise seabed sweep and drag
Optional quick check
Section 6 of 7
A no-anchor zone covers the seagrass in the preferred bay. What is the best plan?
Continue studying Marine Environment
This public lesson is part of Revision Module 17. Full revision access adds the guided Learn, Practise and Test flow, flashcards and revision progress.