North American Ice Service reports iceberg and sea ice limits.

172031Z DEC 24
NAVAREA IV 1588/24(GEN).
1. NORTH AMERICAN ICE SERVICE (NAIS)
ICEBERG BULLETIN 180001Z DEC.
2. ICEBERG LIMIT ALONG TRACKLINE JOINING
53-20N 055-49W, 52-00N 052-00W,
52-45N 048-45W, 54-00N 048-45W,
59-00N 058-00W, 59-45N 052-30W.
3. ESTIMATED ICEBERG LIMIT ALONG
TRACKLINE JOINING
59-45N 052-30W, 58-45N 045-50W,
59-25N 042-35W, 64-25N 036-35W,
65-30N 030-00W.
4. SEA ICE LIMIT ALONG TRACKLINES
JOINING:
A. 45-53N 061-55W, 46-26N 062-00W.
B. 46-27N 062-44W, 47-24N