Daughter craft (DC) operate from emergency response and rescue vessels (ERRV) on the UKCS. Since their introduction in the 1990s the craft have seen progressive incremental development in terms of their design and operation. In parallel with this, the regulatory framework under which they operate has also been adapted. Using a datum point of October 2002, the technical specifications, similarities and differences between DC are discussed in detail and inferences drawn from the analyses. The development of DC based on their changing role is also discussed.
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