In article .com,
" wrote:

Very glad to see the safety discussion. Most informative. I am very
involved in the US effort to require that all exposed propellers on
boats are guarded. We can use your assistance and input.

Short answer - no. Please give up now. I am fully aware of the injury
potential, I have seen the results, some of my work IRB's have prop
guards because of where they operate.

To move to a blanket rule is uncalled for and ridiculous. Are you
seriously proposing that a 500K tonne bulk carrier have prop guards
fitted? Good luck.....

PDW