OPC Atlantic Offshore Waters Forecast Areas

X

ANZ800: Gulf of Maine to the Hague Line

Updated: 420 PM EDT Thu Apr 18 2024

.TONIGHT...E to NE winds less than 10 kt. Seas 3 to 4 ft. 
.FRI...E winds 5 to 10 kt, becoming S to SE 5 to 15 kt. Seas
3 to 4 ft. 
.FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...S winds 10 to 20 kt, becoming S to SW 5 to 15 kt. Seas
3 to 4 ft. Rain.
.SAT NIGHT...W winds 10 to 15 kt, becoming NW. Seas 3 to 4 ft. 
.SUN...W winds 10 to 15 kt, becoming SW. Seas 3 to 4 ft. 
.SUN NIGHT...SW winds 10 to 20 kt, becoming W 10 to 15 kt. Seas
3 to 5 ft. 
.MON...W winds 5 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. 
.TUE...S winds 10 to 15 kt, becoming 10 to 20 kt. Seas 3 to
4 ft. 
.TUE NIGHT...S winds 15 to 20 kt. Seas 3 to 5 ft. 

X

ANZ805: Georges Bank between Cape Cod and 68W north of 1000 FM

Updated: 420 PM EDT Thu Apr 18 2024

.TONIGHT...E winds 10 to 20 kt. Seas 4 to 7 ft. 
.FRI...E winds 10 to 20 kt, becoming 10 to 15 kt. Seas 4 to
7 ft. 
.FRI NIGHT...E to SE winds 10 to 15 kt, becoming S to SE 5 to
15 kt. Seas 3 to 6 ft. 
.SAT...S to SW winds 5 to 15 kt. Seas 3 to 4 ft. Rain.
.SAT NIGHT...W winds 10 to 15 kt, becoming NW 10 to 20 kt. Seas
3 to 5 ft. 
.SUN...W to NW winds 10 to 15 kt, becoming W to SW. Seas 3 to
4 ft. 
.SUN NIGHT...SW winds 10 to 20 kt, becoming W 10 to 15 kt. Seas
3 to 5 ft. 
.MON...W winds 5 to 15 kt, becoming N to NW. Seas 3 to 4 ft. 
.MON NIGHT...Variable winds less than 10 kt, becoming E. Seas
3 to 4 ft. 
.TUE...S winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...S to SE winds 10 to 15 kt, becoming S 10 to 20 kt.
Seas 3 to 5 ft. 

X

ANZ810: South of New England between the Great South Channel and Montauk Point to 1000 FM

Updated: 420 PM EDT Thu Apr 18 2024

.TONIGHT...E winds 15 to 25 kt. Seas 4 to 8 ft. 
.FRI...E winds 10 to 20 kt, becoming 10 to 15 kt. Seas 4 to
7 ft. 
.FRI NIGHT...SE winds 10 to 15 kt, becoming S to SE 5 to 10 kt.
Seas 4 to 7 ft. 
.SAT...S winds 5 to 10 kt, becoming W. Seas 3 to 5 ft. Rain.
.SAT NIGHT...W to NW winds 10 to 15 kt, becoming NW 15 to 20 kt.
Seas 3 to 5 ft. 
.SUN...NW winds 10 to 15 kt, becoming W to SW 10 to 20 kt. Seas
3 to 4 ft. 
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt. Seas
3 to 4 ft. 
.MON...W to NW winds less than 10 kt, becoming N to NW. Seas
3 to 4 ft. 
.MON NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. 
.TUE...E to SE winds 5 to 10 kt, becoming S to SE 10 to 15 kt.
Seas 3 to 4 ft. 
.TUE NIGHT...S to SE winds 10 to 15 kt, becoming S 10 to 20 kt.
Seas 3 to 4 ft. 

X

ANZ815: South of Long Island between Montauk Point and Sandy Hook to 1000 FM

Updated: 420 PM EDT Thu Apr 18 2024

.TONIGHT...E to NE winds 15 to 25 kt. Seas 5 to 9 ft. Chance of
rain. 
.FRI...E winds 10 to 20 kt, becoming 10 to 15 kt. Seas 5 to
8 ft. 
.FRI NIGHT...SE winds 5 to 15 kt, becoming S 5 to 10 kt. Seas
4 to 7 ft. 
.SAT...W to SW winds 5 to 10 kt, becoming W 5 to 15 kt. Seas
3 to 5 ft. Chance of rain. 
.SAT NIGHT...W to NW winds 10 to 15 kt, becoming N to NW. Seas
3 to 5 ft. 
.SUN...NW winds 10 to 15 kt, becoming W to SW. Seas 3 to 4 ft. 
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt. Seas
3 to 4 ft. 
.MON...N to NW winds less than 10 kt. Seas 3 to 4 ft. 
.MON NIGHT...W to SW winds less than 10 kt, becoming variable.
Seas 3 to 4 ft. 
.TUE...S to SE winds 5 to 10 kt, becoming S 10 to 15 kt. Seas
3 to 4 ft. 
.TUE NIGHT...S winds 15 to 20 kt. Seas 3 to 5 ft. 

X

ANZ820: Hudson Canyon to Baltimore Canyon to 1000 FM

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...N to NE winds 15 to 25 kt. Seas 5 to 9 ft. Chance of
rain. 
.FRI...E to NE winds 10 to 15 kt, becoming E 5 to 10 kt. Seas
5 to 8 ft. 
.FRI NIGHT...SE winds 5 to 10 kt, becoming S to SW. Seas 4 to
7 ft. 
.SAT...W to NW winds 5 to 10 kt. Seas 4 to 6 ft. Chance of rain.
.SAT NIGHT...W to NW winds 5 to 15 kt, becoming N 10 to 15 kt.
Seas 3 to 4 ft. 
.SUN...N to NW winds 5 to 10 kt, becoming W to SW. Seas 3 to
4 ft. 
.SUN NIGHT...SW winds 5 to 15 kt, becoming W to NW 5 to 10 kt.
Seas 3 to 4 ft. 
.MON...N winds 5 to 10 kt, becoming variable. Seas 3 to 4 ft. 
.MON NIGHT...S winds less than 10 kt, becoming variable. Seas
3 to 4 ft. 
.TUE...E to SE winds 5 to 10 kt, becoming SE 10 to 15 kt. Seas
3 to 4 ft. 
.TUE NIGHT...S winds 15 to 20 kt. Seas 3 to 5 ft. 

X

ANZ900: Georges Bank between 68W and the Hague Line

Updated: 420 PM EDT Thu Apr 18 2024

.TONIGHT...E winds 10 to 20 kt. Seas 3 to 6 ft. 
.FRI...E to NE winds 5 to 15 kt. Seas 3 to 6 ft. 
.FRI NIGHT...S to SE winds 5 to 10 kt. Seas 3 to 5 ft. 
.SAT...S winds 5 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...W to NW winds 10 to 15 kt. Seas 3 to 5 ft. 
.SUN...W to NW winds 5 to 10 kt, becoming W 10 to 15 kt. Seas
4 to 5 ft. 
.SUN NIGHT...SW winds 10 to 15 kt, becoming W. Seas 3 to 5 ft. 
.MON...W winds 5 to 10 kt, becoming NW. Seas 3 to 4 ft. 
.MON NIGHT...N to NE winds less than 10 kt. Seas 3 to 4 ft. 
.TUE...E to NE winds 10 to 15 kt, becoming S to SE. Seas 3 to
4 ft. 
.TUE NIGHT...S to SE winds 10 to 15 kt. Seas 3 to 5 ft. 

X

ANZ825: Baltimore Canyon to Cape Charles Light to 100 NM offshore

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...N to NE winds 15 to 25 kt. Seas 4 to 8 ft. 
.FRI...NE winds 10 to 15 kt, becoming E to NE 5 to 10 kt. Seas
4 to 8 ft. 
.FRI NIGHT...E to SE winds less than 10 kt, becoming variable.
Seas 5 to 8 ft. 
.SAT...N to NW winds less than 10 kt, becoming N. Seas 4 to
6 ft. Scattered showers and tstms. 
.SAT NIGHT...W to NW winds less than 10 kt, becoming N. Seas
3 to 5 ft. 
.SUN...N to NE winds 5 to 15 kt, diminishing to less than 10 kt.
Seas 3 to 5 ft. 
.SUN NIGHT...E to NE winds less than 10 kt, becoming N to NE.
Seas 3 to 4 ft. 
.MON...NE winds 10 to 20 kt, becoming N to NE 5 to 15 kt. Seas
3 to 6 ft. 
.MON NIGHT...Variable winds less than 10 kt, increasing to 5 to
15 kt. Seas 3 to 4 ft. 
.TUE...E to NE winds 5 to 10 kt, becoming E to SE 10 to 15 kt.
Seas 3 to 4 ft. 
.TUE NIGHT...S to SE winds 10 to 15 kt, becoming S to SW 15 to
20 kt. Seas 3 to 4 ft. 

X

ANZ828: Cape Charles Light to Currituck Beach Light to 100 NM offshore

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...N to NE winds 10 to 15 kt, becoming 10 to 20 kt. Seas
4 to 8 ft. 
.FRI...N to NE winds 10 to 15 kt, diminishing to 5 to 10 kt.
Seas 4 to 8 ft. 
.FRI NIGHT...E to SE winds less than 10 kt, becoming S. Seas
4 to 8 ft. 
.SAT...N to NW winds less than 10 kt, becoming N. Seas 4 to
6 ft. Tstms and scattered showers. 
.SAT NIGHT...Variable winds 5 to 15 kt, becoming N. Seas 3 to
5 ft. 
.SUN...NE winds 5 to 15 kt. Seas 3 to 5 ft. 
.SUN NIGHT...NE winds 15 to 25 kt. Seas 5 to 8 ft. 
.MON...NE winds 20 to 30 kt, becoming N 10 to 20 kt. Seas 6 to
10 ft. 
.MON NIGHT...NE winds 5 to 15 kt. Seas 3 to 6 ft.
.TUE...NE winds 10 to 15 kt, becoming E to SE. Seas 3 to 5 ft. 
.TUE NIGHT...S to SE winds 10 to 15 kt, becoming S to SW. Seas
3 to 4 ft. 

X

ANZ830: Currituck Beach Light to Cape Hatteras to 100 NM offshore

Updated: 421 PM EDT Thu Apr 18 2024

...GALE FORCE WINDS POSSIBLE MON...

.TONIGHT...N to NE winds 5 to 15 kt, becoming N 10 to 20 kt.
Seas 4 to 7 ft. 
.FRI...N winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 5 to
7 ft. 
.FRI NIGHT...Variable winds less than 10 kt, becoming S. Seas
5 to 7 ft. 
.SAT...W to SW winds 5 to 10 kt, becoming N to NW 10 to 15 kt.
Seas 4 to 6 ft. Tstms and scattered showers. 
.SAT NIGHT...N winds 5 to 15 kt, becoming NE. Seas 4 to 6 ft. 
.SUN...E to NE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas
4 to 6 ft. 
.SUN NIGHT...NE winds 10 to 20 kt, increasing to 20 to 30 kt.
Seas 6 to 10 ft. 
.MON...NE winds 25 to 35 kt, becoming N 10 to 20 kt. Seas 7 to
12 ft. 
.MON NIGHT...N to NE winds 10 to 20 kt. Seas 4 to 8 ft. 
.TUE...NE winds 10 to 15 kt, becoming E. Seas 3 to 6 ft. 
.TUE NIGHT...S to SE winds 10 to 15 kt, becoming S to SW. Seas
3 to 4 ft. 

X

ANZ833: Cape Hatteras to Cape Fear to 100 NM Offshore.

Updated: 421 PM EDT Thu Apr 18 2024

...GALE FORCE WINDS POSSIBLE MON...

.TONIGHT...W to SW winds 5 to 15 kt, becoming NE. Seas 3 to
5 ft. 
.FRI...E to NE winds 5 to 15 kt, becoming E to SE 5 to 10 kt.
Seas 3 to 6 ft. 
.FRI NIGHT...S winds less than 10 kt, becoming SW. Seas 3 to
6 ft. 
.SAT...W to SW winds 5 to 15 kt, becoming W to NW. Seas 3 to
6 ft. Tstms and scattered showers. 
.SAT NIGHT...N winds 5 to 15 kt, becoming E to NE. Seas 3 to
6 ft. 
.SUN...E winds 10 to 15 kt, becoming E to NE 10 to 20 kt. Seas
3 to 6 ft. 
.SUN NIGHT...E to NE winds 15 to 25 kt, becoming N to NE. Seas
6 to 10 ft. 
.MON...NE winds 25 to 35 kt, diminishing to 15 to 20 kt. Seas
7 to 12 ft. 
.MON NIGHT...NE winds 15 to 25 kt. Seas 5 to 9 ft. 
.TUE...NE winds 10 to 15 kt, becoming E. Seas 3 to 6 ft. 
.TUE NIGHT...S to SE winds 10 to 15 kt, becoming SW. Seas 3 to
4 ft. 

X

ANZ835: Cape Fear to 31N to 1000 FM

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...W to SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.FRI...W to SW winds less than 10 kt. Seas 3 to 5 ft. 
.FRI NIGHT...S to SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.SAT...W to SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...W to SW winds 5 to 15 kt. Seas 3 to 5 ft. 
.SUN...E to NE winds 5 to 15 kt, becoming SW 10 to 20 kt. Seas
3 to 5 ft. 
.SUN NIGHT...N to NE winds 15 to 25 kt. Seas 5 to 9 ft. 
.MON...N to NE winds 15 to 25 kt. Seas 6 to 10 ft. 
.MON NIGHT...N to NE winds 15 to 25 kt. Seas 6 to 10 ft. 
.TUE...NE winds 10 to 15 kt. Seas 4 to 7 ft. 
.TUE NIGHT...E to SE winds 10 to 15 kt, becoming S to SW. Seas
3 to 5 ft. 

X

ANZ905: East of 69W to the Hague Line between 1000 FM and 39N

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...E winds 20 to 30 kt. Seas 5 to 9 ft. Chance of rain. 
.FRI...E winds 15 to 25 kt. Seas 4 to 8 ft. 
.FRI NIGHT...E winds 10 to 15 kt, becoming SE 5 to 15 kt. Seas
4 to 7 ft. 
.SAT...SE winds 5 to 10 kt, becoming S 5 to 15 kt. Seas 4 to
5 ft. 
.SAT NIGHT...W to SW winds 10 to 20 kt, becoming NW. Seas 4 to
6 ft. 
.SUN...NW winds 10 to 15 kt, becoming W. Seas 4 to 5 ft. 
.SUN NIGHT...W winds 5 to 15 kt, becoming 5 to 10 kt. Seas 3 to
5 ft. 
.MON...Variable winds less than 10 kt, becoming N. Seas 3 to
4 ft. 
.MON NIGHT...N winds 5 to 15 kt, becoming NE 10 to 20 kt. Seas
3 to 5 ft. 
.TUE...NE winds 10 to 20 kt, becoming E to NE 10 to 15 kt. Seas
3 to 6 ft. 
.TUE NIGHT...E winds 10 to 15 kt, becoming SE. Seas 4 to 6 ft. 

X

ANZ910: East of 69W and south of 39N to 250 NM offshore

Updated: 421 PM EDT Thu Apr 18 2024

...GALE WARNING...

.TONIGHT...E winds 20 to 30 kt, increasing to 25 to 35 kt. Seas
7 to 12 ft. Rain.
.FRI...E winds 20 to 30 kt. Seas 7 to 12 ft. 
.FRI NIGHT...E winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 6 to 10 ft. 
.SAT...E to SE winds less than 10 kt, becoming S to SW. Seas
4 to 6 ft. 
.SAT NIGHT...W to NW winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN...W to NW winds 5 to 15 kt. Seas 4 to 5 ft. 
.SUN NIGHT...NW winds less than 10 kt, becoming N to NW. Seas
3 to 4 ft. 
.MON...NE winds 5 to 15 kt, becoming N to NE 10 to 20 kt. Seas
3 to 6 ft. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 7 ft. 
.TUE...NE winds 15 to 20 kt, becoming E to NE 10 to 15 kt. Seas
4 to 7 ft. 
.TUE NIGHT...E winds 10 to 15 kt, becoming S to SE. Seas 4 to
6 ft. 

X

ANZ915: Between 1000FM and 38.5 N west of 69 W

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...E to NE winds 20 to 30 kt. Seas 6 to 11 ft. Chance of
rain. 
.FRI...E winds 15 to 25 kt. Seas 6 to 10 ft. 
.FRI NIGHT...E to SE winds 10 to 15 kt, becoming SE 5 to 10 kt.
Seas 5 to 9 ft. 
.SAT...S winds 5 to 10 kt, becoming W to NW 5 to 15 kt. Seas
4 to 6 ft. 
.SAT NIGHT...W to NW winds 10 to 15 kt, becoming N to NW 10 to
20 kt. Seas 4 to 5 ft. 
.SUN...NW winds 5 to 15 kt, becoming W. Seas 3 to 5 ft. 
.SUN NIGHT...W winds 5 to 15 kt, becoming W to NW 5 to 10 kt.
Seas 3 to 4 ft. 
.MON...N to NE winds less than 5 kt, becoming N 5 to 15 kt. Seas
3 to 4 ft. 
.MON NIGHT...N to NE winds less than 10 kt. Seas 3 to 4 ft. 
.TUE...E to NE winds 10 to 15 kt, becoming E to SE. Seas 3 to
5 ft. 
.TUE NIGHT...S to SE winds 10 to 15 kt, becoming S 10 to 20 kt.
Seas 3 to 4 ft. 

X

ANZ920: Baltimore Canyon to 69W east of 1000 FM and south of 38.5N to 250 NM offshore

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...E to NE winds 20 to 30 kt. Seas 7 to 12 ft. Chance of
rain. 
.FRI...E to NE winds 15 to 25 kt. Seas 6 to 11 ft. 
.FRI NIGHT...E winds 10 to 20 kt, becoming E to SE less than
10 kt. Seas 6 to 10 ft. 
.SAT...Variable winds less than 10 kt, becoming SW. Seas 4 to
7 ft. 
.SAT NIGHT...NW winds 10 to 20 kt, becoming N. Seas 4 to 6 ft. 
.SUN...N winds 5 to 10 kt, becoming NW. Seas 3 to 5 ft. 
.SUN NIGHT...N to NW winds less than 10 kt, becoming N 10 to
20 kt. Seas 3 to 5 ft. 
.MON...NE winds 10 to 20 kt, becoming N. Seas 3 to 6 ft. 
.MON NIGHT...N to NE winds 5 to 15 kt. Seas 3 to 6 ft. 
.TUE...NE winds 10 to 15 kt, becoming E. Seas 3 to 6 ft. 
.TUE NIGHT...E to SE winds 10 to 15 kt, becoming S 10 to 20 kt.
Seas 3 to 5 ft. 

X

ANZ925: Baltimore Canyon to Hatteras Canyon between 100 NM and 250 NM offshore

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...W to NW winds 15 to 25 kt, becoming N to NW. Seas
6 to 10 ft. 
.FRI...N to NW winds 10 to 20 kt, becoming N to NE. Seas 6 to
10 ft. 
.FRI NIGHT...E to NE winds 5 to 15 kt, becoming variable. Seas
5 to 9 ft. 
.SAT...W to SW winds less than 10 kt, becoming SW. Seas 4 to
7 ft. Scattered showers. 
.SAT NIGHT...N to NW winds 10 to 20 kt. Seas 4 to 5 ft. 
.SUN...N to NE winds 5 to 15 kt, becoming E. Seas 3 to 5 ft. 
.SUN NIGHT...NE winds 15 to 25 kt. Seas 5 to 8 ft. 
.MON...NE winds 20 to 30 kt, becoming N 10 to 20 kt. Seas 6 to
10 ft. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 8 ft. 
.TUE...NE winds 10 to 20 kt, becoming E 10 to 15 kt. Seas 4 to
7 ft. 
.TUE NIGHT...E to SE winds 10 to 15 kt, becoming S to SW 10 to
20 kt. Seas 3 to 5 ft. 

X

ANZ930: Hatteras Canyon to Cape Fear between 100 NM and 250 NM offshore

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...W winds 10 to 20 kt, diminishing to 5 to 15 kt, then,
becoming N to NW 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...N to NW winds 10 to 20 kt, diminishing to 5 to 15 kt.
Seas 4 to 7 ft. 
.FRI NIGHT...NW winds less than 10 kt, becoming W to SW. Seas
4 to 6 ft. 
.SAT...SW winds 5 to 15 kt. Seas 4 to 6 ft. 
.SAT NIGHT...W to SW winds 5 to 15 kt, becoming N to NE. Seas
4 to 6 ft. 
.SUN...E winds 5 to 15 kt, becoming SW. Seas 4 to 6 ft. 
.SUN NIGHT...SW winds 10 to 20 kt, becoming E to NE 15 to 25 kt.
Seas 4 to 8 ft. 
.MON...NE winds 20 to 30 kt, becoming N to NE 10 to 20 kt. Seas
7 to 10 ft. 
.MON NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.TUE...NE winds 10 to 15 kt, becoming E. Seas 4 to 7 ft. 
.TUE NIGHT...E winds 10 to 15 kt, becoming S to SE. Seas 4 to
5 ft. 

X

ANZ935: Cape Fear to 31N east of 1000 FM to 250 NM offshore

Updated: 421 PM EDT Thu Apr 18 2024

.TONIGHT...W to SW winds 5 to 15 kt. Seas 4 to 6 ft. 
.FRI...W winds less than 10 kt. Seas 3 to 5 ft. 
.FRI NIGHT...W to SW winds less than 10 kt, becoming SW. Seas
4 to 5 ft. 
.SAT...SW winds 5 to 15 kt. Seas 4 to 5 ft. 
.SAT NIGHT...SW winds 5 to 15 kt. Seas 4 to 5 ft. 
.SUN...SW winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 4 to
5 ft. 
.SUN NIGHT...W to SW winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON...SW winds 15 to 25 kt, becoming NE 10 to 20 kt. Seas 6 to
9 ft. 
.MON NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. 
.TUE...NE winds 10 to 15 kt, becoming E. Seas 5 to 7 ft. 
.TUE NIGHT...E winds 10 to 15 kt, becoming S to SE. Seas 4 to
5 ft. 



  • Below is a map of the Array Offshore Waters Forecast. Clicking on a zone will display the forecast for that area.
ANZ800 ANZ805 ANZ810 ANZ815 ANZ820 ANZ825 ANZ828 ANZ830 ANZ833 ANZ835 ANZ900 ANZ905 ANZ910 ANZ915 ANZ920 ANZ925 ANZ930 ANZ935 Atlantic ANZ935: Cape Fear to 31N east of 1000 FM to 250 NM offshore zone map