In last 20 to 30 years there has been a very large increase in (1) the number of FAST freighters/tankers, (2) floating large trash/logs/containers, (3) off-shore bouys, (4) oil-platforms, (5) ocean voyagers, (6) deep water fisheries.
Seems like some of the hi-tech-ish forward scanning sonars could be a big help or at least warn you to hold on tight in the stormly driving rain pitch blackness just before you surfed into the bracing/understory of an oil-platform or bumped a container full of Nike running shoes. At least the oil platforms don't appear over night and if you update charts regularly you should be aware of 98% of off-shore bouys(?), so that leaves trash as the wild card, bump and slid over the logs one hopes but containers are rather gnarley.
Wonder what Jimmy Cornell, Hal Roth, Elizabeth Autissier, Catherine Chabaud and Ellen MacArthur think about such things?
No shortage of or problem finding things to worry about!