ðeɪ ɑːɹ mˈænd baɪ ɐ kɹˈuː ʌv twˈɛnti fˈoːɹ pˈiːpəl hˌuː ɛnʃˈʊɹ ðætðə bˈoʊts ɑːɹ ˌɑːpɚɹˈeɪʃənəl ænd ˌɔn kˈɔːl twˈɛnti fˈoːɹ ˈaʊɚz ɐ dˈeɪ, θɹuːˈaʊt ðə jˈɪɹ.
They are manned by a crew of 24 people who ensure that the boats are operational and on call 24 hours a day, throughout the year.