Downstream

and suffer cardiac arrest.
Traffic’s another danger; near
the shore there is a speed
limit for jet skis, but once
they reach a quarter-mile out
from the sea wall then it’s
boat territory and ‘they go
extremely fast’. There are
also container ships, such as
the one I saw earlier
emerging from the North Sea,
and boats doing thirty to forty
knots ‘and no swimmer can
outpace that’.