Insert joining positions (a)–(b) and (c)–(d):
59° 59.7′ N, 4° 55.3′ W of Oslo (a)
59° 59.7′ N, 4° 54.3′ W of Oslo (b)
60° 60.1′ N, 4° 55.1′ W of Oslo (c)
60° 60.0′ N, 4° 54.4′ W of Oslo (d)
Insert legend Under arbeid (2021) (symbol F32) between maritime limits above.
See also navigational warning 2021-6.