Insert between positions:
59° 59.92′ N, 4° 55.37′ W of Oslo (Traavik)
59° 59.89′ N, 4° 55.28′ W of Oslo
59° 59.88′ N, 4° 54.40′ W of Oslo (Grönnevika)

Move from 59° 59.86′ N, 4° 54.97′ W to:
59° 59.75′ N, 4° 54.97′ W of Oslo

Cancel NM 2021-8 (T).

Sources: Efs 09/21 (64548 *) and chart NO4F1011, Kartverket Norway, Stavanger, 12 May 2021