Capsizing of use and can usually be recovered by the crew. Some types of dinghy are occasionally deliberately capsized, as capsizing and righting the vessel again can be the fastest means of draining water from the boat. Capsizing (but not necessarily turtling) is an inherent part of dinghy sailing. It is not a question of "if" but a question of "when". For those who do not want the experience, a keelboat monohull has physics on its side. But even yachts can capsize and turtle in extraordinary conditions, so design considerations are important. Such events can overcome skill and experience; boats need
R-expression are "Lisa", "the dog", "my pet unicorn", "the last chapter of the book", and "Janel's cigarettes". The name is derived from the phrase "referring expression", used in semantics for the largest class of NPs, but the GB usage is not synonymous with the semantic sense. R-expression In certain theories of syntax, an R-expression (short for "referring expression") is a category in the three-way classification of noun phrases in binding theory, the other two being anaphors and pronominals. According to principle C of binding theory, R-expressions must be free. R-expressions include names (e.g. Mary, John) and definite DPs (e.g. the cat).