Ship Locations Map

sailwx.info

  
Tides and Currents Weather Stations Pressure Air Temp Water Temp Dewpoint Dewpoint Depression Visibility Wind Speed Wind Dir Waves Ship Positions

Ship database updated 00:34 Friday, 31 Jul 2015 UTC (time now 01:00 UTC)

Ship last reported (UTC) positionCallsign
Sterling Energy2015-Jul-30 0412N 43°16' W 079°47'9LD2470
Bluebill2015-Jul-31 0027N 46°45' W 092°06'C4FK2
Harbour Leader2015-Jul-31 0031N 43°14' W 079°17'C6TK4
P.w Pilot Boat2015-Jul-30 2033N 43°14' W 079°13'CFG3654
Petite Forte2015-Jul-30 0333N 42°37' W 079°20'CFG3677
Cuyahoga2015-Jul-30 0922N 45°48' W 083°50'CFG6460
Csl Welland2015-Jul-30 2033N 43°02' W 079°13'CFK5151
Csl St-laurent2015-Jul-31 0033N 43°07' W 079°12'CFK5152
Algoma Guardian2015-Jul-30 1800N 46°42' W 084°48'CFK9698
Algoma Discovery2015-Jul-31 0031N 43°13' W 079°12'CFK9796
Algosar2015-Jul-30 1733N 42°48' W 080°03'CFN4079
Algocanada2015-Jul-29 2215N 42°21' W 080°35'CFN5193
Tecumseh2015-Jul-30 0331N 45°57' W 083°54'CFN5905
Baie St.paul2015-Jul-30 0129N 42°18' W 080°47'CFN6120
Whitefish Bay2015-Jul-30 0429N 43°39' W 079°22'CFN6287
Nordana Sky2015-Jul-30 1133N 43°18' W 079°49'CFN7132
CCGC Cape Lambton2015-Jul-31 0027N 42°47' W 080°12'CG8049
CCGC Cape Storm2015-Jul-31 0031N 43°14' W 079°13'CG8055
Martha L. Black2015-Jul-30 0425N 43°16' W 079°50'CGCC
CCGS Griffon2015-Jul-30 0333N 43°16' W 079°50'CGDS
Sea Eagle II2015-Jul-31 0033N 43°12' W 079°13'CZ9891
Ocean Golf2015-Jul-30 0414N 43°17' W 079°51'FGYJ
Florijngracht2015-Jul-31 0033N 43°14' W 079°16'PBSU
Beatrix2015-Jul-30 0809N 44°38' W 086°48'PBTQ
Elbeborg2015-Jul-31 0027N 43°04' W 079°13'PBZJ
Beluga Fortune2015-Jul-31 0030N 46°45' W 092°06'V2DI3
Pearl Mist2015-Jul-31 0034N 45°51' W 084°35'V7RM9
Intrepid Canada2015-Jul-31 0033N 43°15' W 079°17'V7WE9
Peter R. Cresswell2015-Jul-30 0631N 42°28' W 080°10'VCBZ
CSL Niagara2015-Jul-30 0334N 42°35' W 079°60'VCGJ
CSL Laurentien2015-Jul-31 0003N 42°29' W 079°53'VCJW
CSL Assiniboine2015-Jul-30 2224N 43°05' W 079°13'VCKQ
Atlantic Huron2015-Jul-29 2319N 45°41' W 084°14'VCQN
Algowood2015-Jul-30 0028N 45°51' W 083°45'VCTD
Empire Sandy2015-Jul-31 0033N 43°07' W 079°12'VCTG
Capt. Henry Jackman2015-Jul-30 0200N 43°42' W 082°30'VCTV
Saginaw2015-Jul-30 1231N 46°05' W 084°01'VF2560
Rt Hon Paul J. Martin2015-Jul-30 1012N 42°25' W 080°21'VGFJ
Algosoo2015-Jul-31 0033N 43°08' W 079°12'VGJD
Algomarine2015-Jul-29 2232N 44°26' W 086°56'VGJV
Frontenac2015-Jul-30 0933N 45°27' W 086°54'VGNB
Tim S. Dool2015-Jul-31 0034N 43°25' W 079°32'VGPY
John D. Leitch2015-Jul-31 0034N 43°08' W 079°12'VGWM
Anglian Lady2015-Jul-29 2127N 45°52' W 084°10'VOLP
Canadian Olympic2015-Jul-30 0427N 43°38' W 079°21'VOPM
Alpena2015-Jul-31 0033N 46°44' W 092°04'WAV4647
Wilfred Sykes2015-Jul-30 2300N 43°18' W 086°54'WC5932
Str. Kaye Barker2015-Jul-31 0000N 45°18' W 083°24'WCF3012
G.l. Ostrander2015-Jul-30 2200N 45°00' W 083°12'WCV7620
American Spirit2015-Jul-30 1000N 47°12' W 086°18'WCX2417
Blue Heron2015-Jul-31 0022N 46°46' W 092°06'WCX7521
Emerald Isle2015-Jul-30 2334N 45°19' W 085°15'WCX7834
Walter E. Blessey, Jr.2015-Jul-30 0115N 38°38' W 083°20'WDA9212
Burns Harbor2015-Jul-29 2129N 44°39' W 086°27'WDB4745
Manistee2015-Jul-30 0600N 41°30' W 081°54'WDB6831
Undaunted2015-Jul-31 0033N 44°58' W 086°14'WDB8103
Lee Ann Ingram2015-Jul-30 0816N 41°31' W 090°30'WDB8152
Ocie Clark (oc)2015-Jul-31 0032N 39°08' W 084°46'WDB8702
Jerry Tinkey (jt)2015-Jul-30 1229N 38°38' W 083°40'WDB8737
Sarah L. Ingram (sli)2015-Jul-30 1526N 38°46' W 083°54'WDB8987
Joyce L. Vanenkevort2015-Jul-31 0033N 46°44' W 092°05'WDB9821
Cooperative Venture2015-Jul-30 1219N 41°31' W 090°28'WDB9901
Sierra Dawn2015-Jul-30 1631N 41°31' W 090°34'WDB9913
Dru Lirette2015-Jul-31 0033N 38°53' W 084°14'WDB9956
Betty Brent2015-Jul-31 0033N 38°55' W 084°15'WDC2634
L.c. Williams2015-Jul-30 1407N 38°48' W 084°11'WDC2699
Penny Eckstein2015-Jul-30 0933N 41°31' W 090°31'WDC5208
Burns Harbor2015-Jul-30 0400N 43°24' W 086°48'WDC6027
Stewart J. Cort2015-Jul-31 0029N 45°56' W 083°54'WDC6055
Jeffboat2015-Jul-30 0709N 39°04' W 084°53'WDC6544
David Evans2015-Jul-31 0033N 39°05' W 084°31'WDC6547
Nancy Anne2015-Jul-31 0033N 45°39' W 084°28'WDC7801
American Century2015-Jul-31 0000N 43°18' W 082°24'WDD2876
Spencer F. Baird2015-Jul-30 2210N 45°39' W 084°28'WDD3182
Jenny Ann2015-Jul-29 2227N 38°47' W 084°01'WDD8897
Tennessee2015-Jul-30 2114N 39°08' W 084°46'WDE2124
Calumet2015-Jul-30 0600N 43°18' W 086°54'WDE3568
Manitowoc2015-Jul-30 1833N 44°40' W 086°23'WDE3569
Drummond Islander IV2015-Jul-30 1005N 45°59' W 083°53'WDE4153
PrentiSS Brown2015-Jul-30 1233N 44°57' W 086°07'WDE6848
Sarah Hunter2015-Jul-30 1533N 38°53' W 084°14'WDE7247
Enid Dibert2015-Jul-31 0033N 38°52' W 084°14'WDE8178
Mary Artie Brannon2015-Jul-30 0421N 38°38' W 083°42'WDE8184
Debi Sharp2015-Jul-30 0611N 38°54' W 084°52'WDE8185
Yvonne Conway2015-Jul-30 0830N 38°46' W 084°06'WDE8187
Nancy Sturgis2015-Jul-30 1314N 38°38' W 083°42'WDE8196
Donna York2015-Jul-30 1529N 39°07' W 084°47'WDE8199
Dorothy Ann2015-Jul-31 0000N 41°30' W 082°42'WDE8761
M K Mcnally2015-Jul-29 2303N 38°57' W 084°51'WDE9036
Jennie K2015-Jul-30 2112N 41°31' W 090°29'WDE9719
Arne Christiansen2015-Jul-30 0618N 39°07' W 084°48'WDE9907
Paula Ruble2015-Jul-30 0530N 38°39' W 083°22'WDF2276
M/V Kentucky2015-Jul-30 2129N 38°47' W 084°06'WDF3021
Garry Lacey2015-Jul-30 0932N 38°28' W 082°36'WDF3677
Hamilton2015-Jul-30 1629N 38°46' W 084°03'WDF4865
Belle Of Cincinnati2015-Jul-30 1229N 38°39' W 083°46'WDF5294
Charlie G.2015-Jul-30 2131N 41°31' W 090°30'WDF5686
River Queen2015-Jul-31 0033N 39°07' W 084°28'WDF5966
M/V Marathon2015-Jul-30 1831N 39°09' W 084°45'WDF6313
Victory2015-Jul-30 0100N 44°12' W 082°36'WDF7020
River Dance2015-Jul-30 1830N 46°44' W 092°08'WDF8879
Bernard G.2015-Jul-30 0030N 41°31' W 090°28'WDF9486
Mary Alice Baker2015-Jul-30 1233N 38°37' W 083°40'WDG2336
City Of Maysville2015-Jul-30 1122N 38°42' W 083°49'WDG2343
Big "d"2015-Jul-30 1028N 41°31' W 090°33'WDG3181
Flatout 22015-Jul-30 0231N 45°01' W 085°46'WDG4069
Bea Black2015-Jul-30 1519N 39°07' W 084°48'WDG4086
Alexandra2015-Jul-30 1333N 43°14' W 079°13'WDG4369
Edwin H. Gott2015-Jul-30 1425N 44°52' W 086°26'WDG7082
Sir Robert2015-Jul-30 1531N 41°31' W 090°33'WDG7204
James H2015-Jul-30 1226N 38°38' W 083°42'WDG8121
Discovery2015-Jul-31 0032N 39°06' W 084°26'WDH4210
Otter2015-Jul-31 0033N 45°26' W 084°59'WDH6186
MV Findlay2015-Jul-31 0033N 38°58' W 084°18'WDH7362
Philip R. Clarke2015-Jul-30 1100N 47°00' W 085°42'WDH7554
Cason J. Callaway2015-Jul-30 1300N 45°30' W 083°48'WDH7556
John G. Munson2015-Jul-30 1000N 42°42' W 082°30'WDH7557
Roger Blough2015-Jul-30 2300N 46°30' W 084°18'WDH7559
Edgar B. Speer2015-Jul-30 1200N 42°12' W 087°18'WDH7562
Capt. James H. Coomer III2015-Jul-30 1231N 38°38' W 083°42'WDH8175
Mariya Moran2015-Jul-31 0031N 43°15' W 079°16'WDH8622
Endeavour2015-Jul-30 1533N 39°07' W 084°47'WDH9406
Three Sons2015-Jul-31 0033N 45°22' W 085°01'WDH9801
Cason J Callaway2015-Jul-31 0033N 45°09' W 086°20'WE4879
Hon James L Oberstar2015-Jul-31 0000N 46°42' W 086°18'WL3108
Herbert C Jackson2015-Jul-30 1800N 44°48' W 082°24'WL3972
Edgar B Speer2015-Jul-30 0033N 44°37' W 086°32'WQZ9670
John R Asher2015-Jul-31 0033N 46°44' W 092°04'WSF6691
Str Lee A Tregurtha2015-Jul-31 0000N 43°00' W 082°24'WUR8857
Indiana Harbor2015-Jul-30 0714N 46°15' W 084°06'WXN3191
Buffalo2015-Jul-30 0800N 41°54' W 083°06'WXS6134
Joseph L Block2015-Jul-31 0033N 45°52' W 084°30'WXY6216
James R Barker2015-Jul-31 0033N 46°46' W 092°06'WYP8657
Mesabi Miner2015-Jul-31 0033N 46°45' W 092°08'WYQ4356
Paul R Tregurtha2015-Jul-31 0000N 47°30' W 088°24'WYR4481
Sam Laud2015-Jul-31 0000N 47°24' W 090°12'WZC7602
Algoma Harvester2015-Jul-30 1418N 46°00' W 083°53'XJBK
Blue Moon2015-Jul-31 0033N 43°10' W 079°12'ZCOG4
Ships in port or not reporting today:
  
Tides and Currents Weather Stations Pressure Air Temp Water Temp Dewpoint Dewpoint Depression Visibility Wind Speed Wind Dir Waves Ship Positions

Ship database updated 00:34 Friday, 31 Jul 2015 UTC (time now 01:00 UTC)

Ship last reported (UTC) positionCallsign
Sterling Energy2015-Jul-30 0412N 43°16' W 079°47'9LD2470
Bluebill2015-Jul-31 0027N 46°45' W 092°06'C4FK2
Harbour Leader2015-Jul-31 0031N 43°14' W 079°17'C6TK4
P.w Pilot Boat2015-Jul-30 2033N 43°14' W 079°13'CFG3654
Petite Forte2015-Jul-30 0333N 42°37' W 079°20'CFG3677
Cuyahoga2015-Jul-30 0922N 45°48' W 083°50'CFG6460
Csl Welland2015-Jul-30 2033N 43°02' W 079°13'CFK5151
Csl St-laurent2015-Jul-31 0033N 43°07' W 079°12'CFK5152
Algoma Guardian2015-Jul-30 1800N 46°42' W 084°48'CFK9698
Algoma Discovery2015-Jul-31 0031N 43°13' W 079°12'CFK9796
Algosar2015-Jul-30 1733N 42°48' W 080°03'CFN4079
Algocanada2015-Jul-29 2215N 42°21' W 080°35'CFN5193
Tecumseh2015-Jul-30 0331N 45°57' W 083°54'CFN5905
Baie St.paul2015-Jul-30 0129N 42°18' W 080°47'CFN6120
Whitefish Bay2015-Jul-30 0429N 43°39' W 079°22'CFN6287
Nordana Sky2015-Jul-30 1133N 43°18' W 079°49'CFN7132
CCGC Cape Lambton2015-Jul-31 0027N 42°47' W 080°12'CG8049
CCGC Cape Storm2015-Jul-31 0031N 43°14' W 079°13'CG8055
Martha L. Black2015-Jul-30 0425N 43°16' W 079°50'CGCC
CCGS Griffon2015-Jul-30 0333N 43°16' W 079°50'CGDS
Sea Eagle II2015-Jul-31 0033N 43°12' W 079°13'CZ9891
Ocean Golf2015-Jul-30 0414N 43°17' W 079°51'FGYJ
Florijngracht2015-Jul-31 0033N 43°14' W 079°16'PBSU
Beatrix2015-Jul-30 0809N 44°38' W 086°48'PBTQ
Elbeborg2015-Jul-31 0027N 43°04' W 079°13'PBZJ
Beluga Fortune2015-Jul-31 0030N 46°45' W 092°06'V2DI3
Pearl Mist2015-Jul-31 0034N 45°51' W 084°35'V7RM9
Intrepid Canada2015-Jul-31 0033N 43°15' W 079°17'V7WE9
Peter R. Cresswell2015-Jul-30 0631N 42°28' W 080°10'VCBZ
CSL Niagara2015-Jul-30 0334N 42°35' W 079°60'VCGJ
CSL Laurentien2015-Jul-31 0003N 42°29' W 079°53'VCJW
CSL Assiniboine2015-Jul-30 2224N 43°05' W 079°13'VCKQ
Atlantic Huron2015-Jul-29 2319N 45°41' W 084°14'VCQN
Algowood2015-Jul-30 0028N 45°51' W 083°45'VCTD
Empire Sandy2015-Jul-31 0033N 43°07' W 079°12'VCTG
Capt. Henry Jackman2015-Jul-30 0200N 43°42' W 082°30'VCTV
Saginaw2015-Jul-30 1231N 46°05' W 084°01'VF2560
Rt Hon Paul J. Martin2015-Jul-30 1012N 42°25' W 080°21'VGFJ
Algosoo2015-Jul-31 0033N 43°08' W 079°12'VGJD
Algomarine2015-Jul-29 2232N 44°26' W 086°56'VGJV
Frontenac2015-Jul-30 0933N 45°27' W 086°54'VGNB
Tim S. Dool2015-Jul-31 0034N 43°25' W 079°32'VGPY
John D. Leitch2015-Jul-31 0034N 43°08' W 079°12'VGWM
Anglian Lady2015-Jul-29 2127N 45°52' W 084°10'VOLP
Canadian Olympic2015-Jul-30 0427N 43°38' W 079°21'VOPM
Alpena2015-Jul-31 0033N 46°44' W 092°04'WAV4647
Wilfred Sykes2015-Jul-30 2300N 43°18' W 086°54'WC5932
Str. Kaye Barker2015-Jul-31 0000N 45°18' W 083°24'WCF3012
G.l. Ostrander2015-Jul-30 2200N 45°00' W 083°12'WCV7620
American Spirit2015-Jul-30 1000N 47°12' W 086°18'WCX2417
Blue Heron2015-Jul-31 0022N 46°46' W 092°06'WCX7521
Emerald Isle2015-Jul-30 2334N 45°19' W 085°15'WCX7834
Walter E. Blessey, Jr.2015-Jul-30 0115N 38°38' W 083°20'WDA9212
Burns Harbor2015-Jul-29 2129N 44°39' W 086°27'WDB4745
Manistee2015-Jul-30 0600N 41°30' W 081°54'WDB6831
Undaunted2015-Jul-31 0033N 44°58' W 086°14'WDB8103
Lee Ann Ingram2015-Jul-30 0816N 41°31' W 090°30'WDB8152
Ocie Clark (oc)2015-Jul-31 0032N 39°08' W 084°46'WDB8702
Jerry Tinkey (jt)2015-Jul-30 1229N 38°38' W 083°40'WDB8737
Sarah L. Ingram (sli)2015-Jul-30 1526N 38°46' W 083°54'WDB8987
Joyce L. Vanenkevort2015-Jul-31 0033N 46°44' W 092°05'WDB9821
Cooperative Venture2015-Jul-30 1219N 41°31' W 090°28'WDB9901
Sierra Dawn2015-Jul-30 1631N 41°31' W 090°34'WDB9913
Dru Lirette2015-Jul-31 0033N 38°53' W 084°14'WDB9956
Betty Brent2015-Jul-31 0033N 38°55' W 084°15'WDC2634
L.c. Williams2015-Jul-30 1407N 38°48' W 084°11'WDC2699
Penny Eckstein2015-Jul-30 0933N 41°31' W 090°31'WDC5208
Burns Harbor2015-Jul-30 0400N 43°24' W 086°48'WDC6027
Stewart J. Cort2015-Jul-31 0029N 45°56' W 083°54'WDC6055
Jeffboat2015-Jul-30 0709N 39°04' W 084°53'WDC6544
David Evans2015-Jul-31 0033N 39°05' W 084°31'WDC6547
Nancy Anne2015-Jul-31 0033N 45°39' W 084°28'WDC7801
American Century2015-Jul-31 0000N 43°18' W 082°24'WDD2876
Spencer F. Baird2015-Jul-30 2210N 45°39' W 084°28'WDD3182
Jenny Ann2015-Jul-29 2227N 38°47' W 084°01'WDD8897
Tennessee2015-Jul-30 2114N 39°08' W 084°46'WDE2124
Calumet2015-Jul-30 0600N 43°18' W 086°54'WDE3568
Manitowoc2015-Jul-30 1833N 44°40' W 086°23'WDE3569
Drummond Islander IV2015-Jul-30 1005N 45°59' W 083°53'WDE4153
PrentiSS Brown2015-Jul-30 1233N 44°57' W 086°07'WDE6848
Sarah Hunter2015-Jul-30 1533N 38°53' W 084°14'WDE7247
Enid Dibert2015-Jul-31 0033N 38°52' W 084°14'WDE8178
Mary Artie Brannon2015-Jul-30 0421N 38°38' W 083°42'WDE8184
Debi Sharp2015-Jul-30 0611N 38°54' W 084°52'WDE8185
Yvonne Conway2015-Jul-30 0830N 38°46' W 084°06'WDE8187
Nancy Sturgis2015-Jul-30 1314N 38°38' W 083°42'WDE8196
Donna York2015-Jul-30 1529N 39°07' W 084°47'WDE8199
Dorothy Ann2015-Jul-31 0000N 41°30' W 082°42'WDE8761
M K Mcnally2015-Jul-29 2303N 38°57' W 084°51'WDE9036
Jennie K2015-Jul-30 2112N 41°31' W 090°29'WDE9719
Arne Christiansen2015-Jul-30 0618N 39°07' W 084°48'WDE9907
Paula Ruble2015-Jul-30 0530N 38°39' W 083°22'WDF2276
M/V Kentucky2015-Jul-30 2129N 38°47' W 084°06'WDF3021
Garry Lacey2015-Jul-30 0932N 38°28' W 082°36'WDF3677
Hamilton2015-Jul-30 1629N 38°46' W 084°03'WDF4865
Belle Of Cincinnati2015-Jul-30 1229N 38°39' W 083°46'WDF5294
Charlie G.2015-Jul-30 2131N 41°31' W 090°30'WDF5686
River Queen2015-Jul-31 0033N 39°07' W 084°28'WDF5966
M/V Marathon2015-Jul-30 1831N 39°09' W 084°45'WDF6313
Victory2015-Jul-30 0100N 44°12' W 082°36'WDF7020
River Dance2015-Jul-30 1830N 46°44' W 092°08'WDF8879
Bernard G.2015-Jul-30 0030N 41°31' W 090°28'WDF9486
Mary Alice Baker2015-Jul-30 1233N 38°37' W 083°40'WDG2336
City Of Maysville2015-Jul-30 1122N 38°42' W 083°49'WDG2343
Big "d"2015-Jul-30 1028N 41°31' W 090°33'WDG3181
Flatout 22015-Jul-30 0231N 45°01' W 085°46'WDG4069
Bea Black2015-Jul-30 1519N 39°07' W 084°48'WDG4086
Alexandra2015-Jul-30 1333N 43°14' W 079°13'WDG4369
Edwin H. Gott2015-Jul-30 1425N 44°52' W 086°26'WDG7082
Sir Robert2015-Jul-30 1531N 41°31' W 090°33'WDG7204
James H2015-Jul-30 1226N 38°38' W 083°42'WDG8121
Discovery2015-Jul-31 0032N 39°06' W 084°26'WDH4210
Otter2015-Jul-31 0033N 45°26' W 084°59'WDH6186
MV Findlay2015-Jul-31 0033N 38°58' W 084°18'WDH7362
Philip R. Clarke2015-Jul-30 1100N 47°00' W 085°42'WDH7554
Cason J. Callaway2015-Jul-30 1300N 45°30' W 083°48'WDH7556
John G. Munson2015-Jul-30 1000N 42°42' W 082°30'WDH7557
Roger Blough2015-Jul-30 2300N 46°30' W 084°18'WDH7559
Edgar B. Speer2015-Jul-30 1200N 42°12' W 087°18'WDH7562
Capt. James H. Coomer III2015-Jul-30 1231N 38°38' W 083°42'WDH8175
Mariya Moran2015-Jul-31 0031N 43°15' W 079°16'WDH8622
Endeavour2015-Jul-30 1533N 39°07' W 084°47'WDH9406
Three Sons2015-Jul-31 0033N 45°22' W 085°01'WDH9801
Cason J Callaway2015-Jul-31 0033N 45°09' W 086°20'WE4879
Hon James L Oberstar2015-Jul-31 0000N 46°42' W 086°18'WL3108
Herbert C Jackson2015-Jul-30 1800N 44°48' W 082°24'WL3972
Edgar B Speer2015-Jul-30 0033N 44°37' W 086°32'WQZ9670
John R Asher2015-Jul-31 0033N 46°44' W 092°04'WSF6691
Str Lee A Tregurtha2015-Jul-31 0000N 43°00' W 082°24'WUR8857
Indiana Harbor2015-Jul-30 0714N 46°15' W 084°06'WXN3191
Buffalo2015-Jul-30 0800N 41°54' W 083°06'WXS6134
Joseph L Block2015-Jul-31 0033N 45°52' W 084°30'WXY6216
James R Barker2015-Jul-31 0033N 46°46' W 092°06'WYP8657
Mesabi Miner2015-Jul-31 0033N 46°45' W 092°08'WYQ4356
Paul R Tregurtha2015-Jul-31 0000N 47°30' W 088°24'WYR4481
Sam Laud2015-Jul-31 0000N 47°24' W 090°12'WZC7602
Algoma Harvester2015-Jul-30 1418N 46°00' W 083°53'XJBK
Blue Moon2015-Jul-31 0033N 43°10' W 079°12'ZCOG4