vˈɪdɑːɹ wʌz kəmˈɪʃənd ˌɪntʊ ðə ɹˈɔɪəl noːɹwˈiːdʒən nˈeɪvi ˌɔn twˈɛnti wˈʌn ɑːktˈoʊbɚ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɛvən, fˈɑːloʊd baɪ vˈeɪl ˌɔn tˈɛn fˈɛbɹuːˌɛɹi nˈaɪntiːnhˈʌndɹɪd sˈɛvənti ˈeɪt.
Vidar was commissioned into the Royal Norwegian Navy on 21 October 1977, followed by Vale on 10 February 1978.