The boating term "man overboard" is offensive, and the phrase "sportsmanship" isn't inclusive, the national governing body for sailing has claimed.
The Royal Yachting Association has suggested that these traditional sayings should be revised in an inclusive language guide.
The body has said that "man overboard" should be replaced with "person in water", while "sporting behaviour" should be used instead of "sportsmanship".
Some additional banned terms include "Seamanship", "Chairman" and "Mother duties".
The Royal Yachting Association has suggested that these traditional sayings should be revised in an inclusive language guide
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The national governing body for sailing, which was founded in 1875, urges members to use language which "honours and values" women and non-binary people within the sport and recreational activity and avoid the terms that "might not be comfortable for a person who recognises themselves to be a woman or non-binary".
The guide suggests that the phrases can still be used to "raise the alarm where a person has fallen overboard to initiate the emergency procedures", but outside of these situations "person in water" is advised.
Critics said the new language guidance would have past sailors from previous eras "turning in their graves".
The Royal Yachting Association guide states: "Some language in sailing and boating environments might not value or represent people who identify as female or prefer gender neutral terms.
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Some additional banned terms include 'Seamanship', 'Chairman' and 'Mother duties'
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It added: "For a long time, some terminology focused on the male perspective of being involved in sailing and boating.
"As the representation of people identifying as female or non-binary has increased within our sport and recreation, it’s important that the language that we use honours and values them too."
Two crew member roles, "winchman" or "grinder", should be replaced with "person on the winch" or "winchperson", according to guidance.
Sir John Hayes, chairman of the Common Sense group of Conservative MPs, described the advice as "balderdash".
The national governing body for sailing was founded in 1875
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He said: "Quite a large element of the privileged class, that is bewildered and befuddled by political correctness, has adopted this kind of brainless nonsense.
"This is at odds with the common sense of most seafarers over time, and many old sorts would be turning in their graves if they saw such balderdash."
The Royal Yachting Association recommends its members "steer clear from using terms such as ‘Christian name’ as this is not representative of all religions and beliefs".
The term BAME, which is used to categorise Black, Asian and Minority Ethnic groups, is also cited as "exclusionary" as it does not take into account white ethnic groups such as Romany or gypsy travellers.
The "A" in BAME, which stands for "Asian" in the definition, is "not fully respecting the differing cultures within the Continent", the language guide claims.
GB News has contacted the Royal Yachting Association for comment.