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LIETUVOS AUKŠTOJI JŪREIVYSTĖS MOKYKLA NAVIGACIJOS KATEDRA HIDROMETEOROLOGINIS REISO APRŪPINIMAS KURSINIS DARBAS Darbo autorius: Darbo vadovas: Lekt. V. Dubra Klaipėda 2016

Navigacine Hidrometeorologija

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Reiso aprupinimas pagal Locijas, faktinius ir prognostinius orus. Marsrutas Walvis bay - Cape Town.

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Page 1: Navigacine Hidrometeorologija

LIETUVOS AUKŠTOJI JŪREIVYSTĖS MOKYKLA

NAVIGACIJOS KATEDRA

HIDROMETEOROLOGINIS REISO APRŪPINIMASKURSINIS DARBAS

Darbo autorius:

Darbo vadovas:Lekt. V. Dubra

Klaipėda 2016

Page 2: Navigacine Hidrometeorologija

TURINYS

ĮVADAS....................................................................................................................................................4

1. LAIVO APRAŠYMAS....................................................................................................................5

2. REISO APRAŠYMAS.....................................................................................................................6

3. REISO GRAFINIS VAIZDAS.........................................................................................................7

3.1 Reiso posūkio taškų suvestinė....................................................................................................7

4. WALVIS BAY.................................................................................................................................8

4.1 Informacija apie uosto navigacinius ypatumus.......................................................................8

4.2 Metinė orų statistika................................................................................................................8

5. CAPE TOWN.................................................................................................................................10

5.1 Metinė orų statistika..............................................................................................................10

6. PROGNOSTINIAI IR FAKTINIAI HIDROMETEOROLOGINIAI STEBĖJIMAI....................12

6.1 02-13 0600 UTC...................................................................................................................12

6.2 02-13 1200 UTC...................................................................................................................15

6.3 02-14 0000 UTC...................................................................................................................18

6.4 02-14 1800 UTC...................................................................................................................21

6.5 02-15 0000 UTC...................................................................................................................24

6.6 02-15 1200 UTC...................................................................................................................27

6.7 02-16 0000 UTC...................................................................................................................30

7. NAVTEX PRANEŠIMAI..............................................................................................................33

7.1 02-13 0800 UTC...................................................................................................................33

7.2 02-13 1300 UTC...................................................................................................................36

7.3 02-14 0800 UTC...................................................................................................................39

7.4 02-14 1300 UTC...................................................................................................................42

7.5 02-15 0800 UTC...................................................................................................................45

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7.6 02-15 1300 UTC...................................................................................................................48

8. LAIVO ŽURNALAS.....................................................................................................................51

IŠVADOS................................................................................................................................................52

LITERATŪROS SĄRAŠAS...................................................................................................................53

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ĮVADAS

Navigacijoje ypač svarbu yra teisingai mokėti įvertinti hidrometeorologines sąlygas, norint

išvengti papildomų problemų. Šiais laikais meteorologinė informacija yra ne sunkiai pasiekiama,

tačiau reikia mokėti ją skaityti ir panaudoti praktikoje. Šio darbo tikslas yra įvertinti duoto maršruto

hidrometeorologines sąlygas, sudaryti tikslų vaizdą apie artėjančius pavojus laivybai ir parinkti

atitinkamą maršrutą. Taip pat norint parodyti prognozių tikslumą bus lyginami faktiniai orai su

prognozėmis.

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1. LAIVO APRAŠYMAS

Pav. 1 Queen Mary 2Trondheime, 2007

Pagrindinės laivo charakteristikos

Tipas Kruizinis laineris.

Tonažas 148 528 Bt.

Vandentalpa ~75 000 t.

Ilgis/Plotis/

Aukštis

345m/41m(45m tiltelyje)/72m.

Grimzlė 10,1m.

Denių sk. 13 keleivinių iš 17 bendrų.

Variklis 4x Wärtsilä 16V 46C-CR / 16,800 kW 

Sraigtai 4x 21,5 MW Rolls-Royce/Alstom „Mermaid“ sraigtai, 2 azipodai ir 2

stacionarūs.

Greitis 30 mazgų.

Keleivių sk. 2 620 + 1 253 įgūla ir aptarnaujantysis personalas.

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2. REISO APRAŠYMAS

Planuojamas išplaukimas iš Walvis Bay uosto 2016m. Vasario 13d. 0500 UTC laiku, atstumas

– 720Jm, kelionės trukmė lygiai 3 paros, vidutiniu greičiu 10 mazgų. Kursas sudarytas atsižvelgiant

į hidrometeorologines prognozes ir locijose pateiktą medžiagą apie navigacinius pavojus. Atvykimas

prognozuojamas tų pačių metų Vasario 16d 0500 UTC laiku.

Navigaciniai leidiniai būtini reisui:

Jūrlapiai nr: 4134; 3859; 3860; 3869; 3870; 2078; 4141; 4148; 4146; 1846.

Nautical publication nr 2.

Admirality Tide Tables Volume 2

Admirality list of Radio Signals Volume 6

Įgūlos sąrašas

Keleivių sąrašas

Atvykimo ataskaita

Jūrinės sveikatos deklaracija

Atsargų sąrašas

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3. REISO GRAFINIS VAIZDAS

Pav. 2 Gradinis maršruto Walvis Bay - Cape Town vaizdas

3.1 Reiso posūkio taškų suvestinė

# Kursas Atstumas Ilguma Platuma

1. 339.49° 4.66nm S22°50.997' E14°28.025'

2. 259.21° 10.66nm S22°52.985' E14°16.665'

3. 174.33° 195.57nm S26°07.423' E14°38.160'

4. 159.19° 486.54nm S33°39.366' E18°05.101'

5. 129.43° 22.57nm S33°53.659' E18°26.087'

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4. WALVIS BAY

Walvis bay uostas (22°57‘S, 14°30‘E) įsikūręs vakarinėje Namibijos pakrantėje Pietrytinėje

Walvis bay pusėje. Pagrindinė uosto paskirtis – žvejybos industrija. Eksporto prekes sudaro žuvis ir

jos produktai, druska, varis, švinas, granitas, marmuras ir guanas. Dažniausiai importuojama

sunkioji technika, fosfatai, bitumas ir kiti naftos produktai.

Uosto vartai tarp Pelican Point (22°52,4‘S, 14°26,8‘E) ir Bird Rock, 5 mylios i rytus. Vartų

gylis – 12,8m. Laivai privalo visada turėti gylio atsargos bent 0,6m ir 1,2m iškastuose kanaluose.

Giliausia krantinė – konteinerių terminalas, o ilgiausia – pagrindinė prieplauka. Vidutinė

siziginių potvynių amplitudė apie 1,4m, vidutinė kvadratūrinių potvynių amplitudė apie 0,6m.

Papildoma informacija skaityti Admirality Tide Tables Volume 2. Vandens tankis 1,025g/cm3.

Maksimalus laivo ilgis 243m, o grimzlė 12,8m.

4.1 Informacija apie uosto navigacinius ypatumus

Dėl uosto radijo ryšio skaityti Admirality List of Radio Signals Volume 6(3). Numanomas

atplaukimo laikas turėtų būti pranešamas 72 valandos iki atplaukimo arba 96 valandos, jei į šį

periodą įeina sekmadienis arba valstybinė šventė. VHF ryšys turėtų būti sukurtas laivui priartėjus

prie uosto per 20 Jm. Laivai gali inkaruotis nustatytose vietose pažymėtose numeriais 1 ir 2, kurios

yra pažymėtos jūrlapyje. Locmanas yra privalomas uosto teritorijoje ir dirba nuo 0600 iki 2000.

Locmanas priima laivus 5 kabeltovai į Šiaurės Vakarus nuo Fairway Light-buoy (55°52,8‘S,

14°30,0‘E.

4.2 Metinė orų statistika

Pav. 3 Walvis Bay metinė vėjo prognozė

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Pav. 4 Metinė Walvis bay vėjų rožė

Dažniausiai sutinkami vėjai uoste yra SW krypties. NW krypties vėjai bet kokio dydžio yra

labai reti uosto teritorijoje. Žiemą stiprūs E krypties išneša nemažai vandens iš uosto ekvatorijos.

Rūkai yra dažni nepriklausomai nuo metų laiko, bet dažnesni arti kranto rudenį ir žiemą. Jie gali

atsirasti net prie 5 boforto skalės vėjų SW krypties, o žiemą ir vyraujant NW vėjams. Žema, smelėta

kranto linija ypač apsunkina sąlygas priplaukiant prie uosto rūko metu.

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5. CAPE TOWN

Cape Town uostas yra įsikūręs Table Bay (33°55,5‘S, 18°25,7‘E). Šis uostas yra vienas

didžiausių uostų pietiniame pusrutulyje. Pagrindinės eksporto prekės yra vaisiai, vynas, sulčių

koncentratai, mėsa, žuvis, granito luitai, varis, tekstilė ir statybinės prekės. Importuojama daugiausia

sunkioji technika ir žaliavos. Įplaukimas į uostą iš N, per W, iki SSW, arba per eismo juostas arba

priekrantės laivų eismo zonas. Galimas praplaukimas pro Robbeneiland (33°48,4‘S, 18°22,0‘E) iš

šiaurės arba iš pietų. Mažiausias uosto priplaukimo gylis yra 15,7m. Giliausia ir ilgiausia krantinė

Main Quay in Ben Schoeman Dock. Siziginių potvynių amplitudė siekia 1,5m. Kvadratūrinių

potvynių amplitudė siekia 0,6m. Vandens tankis 1,025 g/cm3. Maksimalus laivo ilgis 370m, plotis

87m ir 12,8m grimzlė. Tankeriai ir laivai gabenantis pavojingus krovinius ar sprogmenis

neleidžiami švartuotis naktį. Apie atvykimą į uostą privaloma pranešti 96, 72 ir 1 valandą prieš

atplaukimą.

5.1 Metinė orų statistika

Nuo balandžio vidurio iki rugsėjo vidurio vyrauja N ir NW krypties vėjai. Jie retai pučia

stipriai iš šių pusių, tačiau dažnai keičiasi į W ir SW krypties vėjus ir sustiprėja. Blogiausias oras ir

stipriausi vėjai dažniausiai pasireškia vėjo krypčiai pasikeitus į W ir SW. Gruodžio, sausio ir vasario

mėnesiais patariama inkaruotis kuo labiau, kiek leidžia gylis į rytus.

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Pav. 5 Cape Town metinė vėjo prognozė

Pav. 6 Cape town metinė vėjų rožė

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6. PROGNOSTINIAI IR FAKTINIAI HIDROMETEOROLOGINIAI STEBĖJIMAI

6.1 02-13 0600 UTC

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6.2 02-13 1200 UTC

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6.3 02-14 0000 UTC

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6.4 02-14 1800 UTC

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6.5 02-15 0000 UTC

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6.6 02-15 1200 UTC

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6.7 02-16 0000 UTC

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7. NAVTEX PRANEŠIMAI

Viso reiso metu plaukiojimo rajonas pagal GMDSS navarea VII. Šiame rajone yra 4

transliavimo stotys iš kurių dvi transliuoja šio reiso plaukimo plote. Žinutės buvo sunčiamos kasdien

0800 ir 1300 UTC laiku.

Pav. 7 Navarea VII GMDSS pranešimų transliavimo stotys

7.1 02-13 0800 UTC

FQZA30 FAPR 130800

SECURITE:

=========

WEATHER BULLETIN FOR COASTAL WATERS UP TO 50 NAUTICAL MILES

SEAWARD. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 13th

FEBRUARY 2016 at 08:00 UTC.

FORECAST VALID FROM 131000 TO 141000 UTC:

WIND IN KNOTS, WAVE HEIGHTS IN METRES. NO SEA STATE GIVEN IF WAVES

LESS THAN 2M.

NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.

INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5.

WAVE HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS WHICH MAY BE ACCOMPANIED

BY INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.

THESE ESTIMATES OF WINDS AND WAVES DO NOT TAKE INTO ACCOUNT THE

ENHANCING EFFECTS OF THE AGULHAS CURRENT OFF THE SOUTH AFRICAN

EAST COAST.

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NOTE: WX OBSERVATIONS.

======================

COULD ALL VESSELS EXPERIENCING UNEXPECTED, SEVERE WX/SEA STATE

PLEASE MAKE EVERY EFFORT TO REPORT THIS TO SAWS VIA CAPE TOWN RADIO.

ALERTS:

-------

WARNINGS:

---------

Nil.

WATCHES:

--------

1. Moderate visibility expected in showers and thundershowers in places between Table Bay

and Durban.

ADVISORIES:

-----------

Nil.

ABNORMAL WAVE CONDITIONS:

=========================

Nil.

CUNENE RIVER TO WALVIS BAY:

WIND : S to SE 10 to 20.

VIS : Good.

WALVIS BAY TO ORANGE RIVER:

WIND : SW 10 to 20 in the north first half of the period, otherwise S to SE 10 to 15.

VIS : Good, but poor in fog patches overnight into tomorrow

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ORANGE RIVER TO CAPE AGULHAS:

WIND : SW to W 10 to 20 south of Hondeklip, otherwise S to SE 10 to 20.

VIS : Good becoming moderate in showers and rain south of Table Bay from afternoon.

SEA STATE: 2.0 to 2.5m SW swell.

CAPE AGULHAS TO EAST LONDON:

WIND : NE 10 to 20 north of Port Alfred, otherwise Variable 05 to 10 at first becoming W

to SW 10 to 20 spreading east reaching East London towards end of the period.

VIS : Good becoming moderate visibility in showers and Thundershowers east of Algoa

from evening to early morning.

SEA STATE: 2.0 to 3.0m, mainly SW swell becoming SE.

EAST LONDON TO MAPUTO:

WIND : N to NE 15 to 25 reaching 30 in places in the south becoming SW 15 to 25 in the

south overnight.

VIS : Good becoming moderate in showers and thundershowers in the afternoon.

SEA STATE: 2.0 to 3.0m, mainly SE swell.

MOZAMBIQUE CHANNEL:

WIND : Light and variable in the south at first becoming S to SE 10 to 20 in the afternoon

but NW 15 to 25 in the north.

VIS : Moderate in showers and thundershowers in the northern parts at times, otherwise

good.

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7.2 02-13 1300 UTC

FQZA30 FAPR 131300

SECURITE:

=========

WEATHER BULLETIN FOR COASTAL WATERS UP TO 50 NAUTICAL MILES

SEAWARD. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 13th

FEBRUARY 2016 at 13:00 UTC.

FORECAST VALID FROM 132200 TO 142200 UTC: WIND IN KNOTS, WAVE

HEIGHTS IN METRES. NO SEA STATE GIVEN IF WAVES LESS THAN 2M.

NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.

INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5. WAVE

HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS WHICH MAY BE ACCOMPANIED BY

INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.

THESE ESTIMATES OF WINDS AND WAVES DO NOT TAKE INTO ACCOUNT THE

ENHANCING EFFECTS OF THE AGULHAS CURRENT OFF THE SOUTH AFRICAN EAST

COAST.

NOTE: WX OBSERVATIONS.

======================

COULD ALL VESSELS EXPERIENCING UNEXPECTED, SEVERE WX/SEA STATE PLEASE MAKE EVERY EFFORT TO REPORT THIS TO SAWS VIA CAPE TOWN RADIO.

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ALERTS:

-------

WARNINGS:

---------

Nil.

WATCHES:

--------

1. Moderate visibility expected in showers and thundershowers in places between Table Bay

and Durban clearing mid-morning.

ADVISORIES:

-----------

Nil.

ABNORMAL WAVE CONDITIONS:

=========================

Nil.

CUNENE RIVER TO WALVIS BAY:

WIND : S to SE 10 to 20.

VIS : Good.

WALVIS BAY TO ORANGE RIVER:

WIND : SW 10 to 20 in the north first half of the period, otherwise S to SE 10 to 15.

VIS : Good, but poor in fog patches overnight into tomorrow

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ORANGE RIVER TO CAPE AGULHAS:

WIND : SW to W 10 to 20 but NW 10 to 20 south of Cape Columbine.

VIS : Good but moderate in showers and rain south of Table Bay from morning.

SEA STATE: 2.0 to 2.5m mainly SW swell.

CAPE AGULHAS TO EAST LONDON:

WIND : NE 10 to 20 north of Port Alfred at first, otherwise W to SW 15 to 25.

VIS : Good becoming moderate visibility in showers and Thundershowers east of Algoa

from evening to early morning.

SEA STATE: 2.0 to 3.0m, with SE swell, becoming 3.5 to 4.0m with SW swell along the

south coast from afternoon.

EAST LONDON TO MAPUTO:

WIND : N to NE 15 to 25 reaching 30 in places in the south becoming SW 15 to 25 in the

south overnight spreading north reaching Richards Bay towards the end of the period.

VIS : Moderate in showers and thundershowers becoming good mid-Morning.

SEA STATE: 2.0 to 3.0m, mainly SE swell.

MOZAMBIQUE CHANNEL:

WIND : NW 15 to 25 in the extreme north, otherwise Light and variable But S to SE 10 to

20 in the south.

VIS : Moderate in showers and thundershowers in the northern parts at times, otherwise

good.

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7.3 02-14 0800 UTC

FQZA30 FAPR 140800 CCA

SECURITE:

=========

WEATHER BULLETIN FOR COASTAL WATERS UP TO 50 NAUTICAL MILES

SEAWARD. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 14th

FEBRUARY 2016 at 08:00 UTC.

FORECAST VALID FROM 141000 TO 151000 UTC: WIND IN KNOTS, WAVE

HEIGHTS IN METRES. NO SEA STATE GIVEN IF WAVES LESS THAN 2M.

NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.

INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5. WAVE

HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS WHICH MAY BE ACCOMPANIED BY

INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.

THESE ESTIMATES OF WINDS AND WAVES DO NOT TAKE INTO ACCOUNT THE

ENHANCING EFFECTS OF THE AGULHAS CURRENT OFF THE SOUTH AFRICAN EAST

COAST.

NOTE: WX OBSERVATIONS.

======================

COULD ALL VESSELS EXPERIENCING UNEXPECTED, SEVERE WX/SEA STATE PLEASE MAKE EVERY EFFORT TO REPORT THIS TO SAWS VIA CAPE TOWN RADIO.

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ALERTS:

-------

WARNINGS:

---------

1. Moderate visibility in showers and thundershowers is expected between East London and

Richards Bay mainly from late afternoon while moderate in light showers and rain between Cape

Point and Cape Agulhas by the end of the period.

WATCHES:

--------

1. Poor visibility in fog patches is expected in places between Cunene River and Orange River

from tonight.

ADVISORIES:

-----------

Nil.

ABNORMAL WAVE CONDITIONS:

=========================

Nil.

CUNENE RIVER TO WALVIS BAY:

WIND : SW 05 to 15 in the south at first, otherwise S to SE 10 to 20.

VIS : Good, becoming poor in fog patches in places overnight.

SEA STATE: 2.0m in places from this evening, S to SW swell.

WALVIS BAY TO ORANGE RIVER:

WIND : SW 05 to 15 in the north at first, otherwise S to SE 10 to 20.

VIS : Good, becoming poor in fog patches in places overnight.

SEA STATE: 2.0m in places, S to SW swell.

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ORANGE RIVER TO CAPE AGULHAS:

WIND : W to SW 05 to 15, reaching 20 to 25 south of Cape Point until mid-period,

becoming SE 05 to 15 north of Cape Columbine from mid-period.

VIS : Good becoming moderate in light showers and rain south of Cape Point by the end of

the period.

SEA STATE: 2.0m mainly in the south, reaching 2.5 to 3.0m south of Cape Point, with a S to

SW swell.

CAPE AGULHAS TO EAST LONDON:

WIND : W to SW 10 to 20, reaching 25 in places.

VIS : Good.

SEA STATE: 2.0 to 3.0m, reaching 3.5 to 4.0m in the west from this evening until mid-

morning, E to SE swell becoming SW in the west spreading to the east by the end of the period.

EAST LONDON TO MAPUTO:

WIND : NE 15 to 25 reaching 30 during the first half of the period, but S to SW 10 to 20

south of Durban spreading to Richards Bay by mid-period, reaching 25 at first.

VIS : Good, becoming moderate in showers and thundershowers south of Richards Bay

mainly from late afternoon.

SEA STATE: 2.0 to 3.0m in the south spreading to the north by mid-period, reaching 3.5m at

first, E to NE swell.

MOZAMBIQUE CHANNEL:

WIND : E to SE 10 to 20 in the extreme south and NE 10 to 20 in the extreme south-west,

otherwise variable 05 to 10 but SW 10 to 15 in the extreme north-east and N to NW 10 to 25 in the

extreme north-west.

VIS : Good but moderate in showers and thundershowers mainly in the north.

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7.4 02-14 1300 UTC

FQZA30 FAPR 141300

SECURITE:

=========

WEATHER BULLETIN FOR COASTAL WATERS UP TO 50 NAUTICAL MILES

SEAWARD. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 14th

FEBRUARY 2016 at 13:00 UTC.

FORECAST VALID FROM 142200 TO 152200 UTC: WIND IN KNOTS, WAVE

HEIGHTS IN METRES. NO SEA STATE GIVEN IF WAVES LESS THAN 2M.

NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.

INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5. WAVE

HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS WHICH MAY BE ACCOMPANIED BY

INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.

THESE ESTIMATES OF WINDS AND WAVES DO NOT TAKE INTO ACCOUNT THE

ENHANCING EFFECTS OF THE AGULHAS CURRENT OFF THE SOUTH AFRICAN EAST

COAST.

NOTE: WX OBSERVATIONS.

======================

COULD ALL VESSELS EXPERIENCING UNEXPECTED, SEVERE WX/SEA STATE PLEASE MAKE EVERY EFFORT TO REPORT THIS TO SAWS VIA CAPE TOWN RADIO.

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ALERTS:

-------

WARNINGS:

---------

1. Moderate visibility in showers and thundershowers are expected between East London and

Richards Bay.

WATCHES:

--------

1. Moderate visibility in light offshore showers and rain between Cape Point and Cape

Agulhas from mid-morning, spreading to George by the Evening, while poor in morning fog patches

in places between Cunene River and Orange River.

ADVISORIES:

-----------

Nil.

ABNORMAL WAVE CONDITIONS:

=========================

Nil.

CUNENE RIVER TO WALVIS BAY:

WIND : S to SE 10 to 20 but SW 05 to 15 in the south during the afternoon.

VIS : Good, but poor in morning fog patches in places.

SEA STATE: 2.0m in places, S to SW swell.

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WALVIS BAY TO ORANGE RIVER:

WIND : S to SE 10 to 20, reaching 25 to 30 from mid-period, but SW 10 to 20 in the

extreme north during the afternoon.

VIS : Good, but poor in morning fog patches in places.

SEA STATE: 2.0 to 2.5m in places, reaching 3.0 to 3.5m by the end of the period, S to SW

swell.

ORANGE RIVER TO CAPE AGULHAS:

WIND : W to SW 10 to 20 but S to SE 05 to 15 north of Cape Columbine, spreading to the

south by evening while reaching 20 to 25 in the north.

VIS : Good but moderate in light offshore showers and rain south of Cape Point from mid-

morning.

SEA STATE: 2.0 to 2.5m in places, reaching 3.0m south of Cape Point at first, S to SW swell.

CAPE AGULHAS TO EAST LONDON:

WIND : W to SW 10 to 20, reaching 25 in the west at first, becoming S to SE 05 to 15 west

of George from the second half of the period.

VIS : Good, becoming moderate in light offshore showers and rain west of George from

the evening.

SEA STATE: 2.0 to 3.0m, reaching 3.5 to 4.0m in the west until mid-period, S to SW swell

but NE in the east until mid-period.

EAST LONDON TO MAPUTO:

WIND : NE 10 to 20 north of Richards Bay reaching 25 at first, otherwise S to SW 10 to 20.

VIS : Good but moderate in showers and thundershowers south of Richards Bay.

SEA STATE: 2.0 to 3.0m, subsiding by mid-period, E to NE swell.

MOZAMBIQUE CHANNEL:

WIND : E to SE 10 to 20 in the extreme south, NE 05 to 15 in the extreme west, NW 05 to

15 in the extreme north-west and SW 05 to 15 in the extreme north-east, otherwise variable 05 to 10.

VIS : Good but moderate in showers and thundershowers in the north.

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7.5 02-15 0800 UTC

FQZA30 FAPR 150800

SECURITE:

=========

WEATHER BULLETIN FOR COASTAL WATERS UP TO 50 NAUTICAL MILES

SEAWARD. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 15th

FEBRUARY 2016 at 08:00 UTC.

FORECAST VALID FROM 151000 TO 161000 UTC: WIND IN KNOTS, WAVE

HEIGHTS IN METRES. NO SEA STATE GIVEN IF WAVES LESS THAN 2M.

NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.

INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5. WAVE

HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS WHICH MAY BE ACCOMPANIED BY

INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.

THESE ESTIMATES OF WINDS AND WAVES DO NOT TAKE INTO ACCOUNT THE

ENHANCING EFFECTS OF THE AGULHAS CURRENT OFF THE SOUTH AFRICAN EAST

COAST.

NOTE: WX OBSERVATIONS.

======================

COULD ALL VESSELS EXPERIENCING UNEXPECTED, SEVERE WX/SEA STATE

PLEASE MAKE EVERY EFFORT TO REPORT THIS TO SAWS VIA CAPE TOWN RADIO.

52

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ALERTS:

-------

WARNINGS:

---------

1. Moderate visibility in showers are expected between East London and Richards Bay.

WATCHES:

--------

Nil.

ADVISORIES:

-----------

Nil.

ABNORMAL WAVE CONDITIONS:

=========================

Nil.

CUNENE RIVER TO WALVIS BAY:

WIND : S to SE 10 to 20.

VIS : Good.

SEA STATE: 2.0m in places, SW swell.

WALVIS BAY TO ORANGE RIVER:

WIND : S to SE 10 to 20.

VIS : Good.

SEA STATE: 2.0 to 3.5m in places, SW swell.

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ORANGE RIVER TO CAPE AGULHAS:

WIND : SW to W 10 to 15 south of Cape Columbine at first, otherwise S to SE 15 to 25

reaching 30 south of Table Bay by Tuesday.

VIS : Good.

SEA STATE: 2.0 to 2.5m, reaching 3.0m in the Cape Point region, SW swell.

CAPE AGULHAS TO EAST LONDON:

WIND : SW 15 to 25, becoming S to SE 15 in the Agulhas area spreading to Cannon Rocks

by end of the period.

VIS : Good.

SEA STATE: 2.0 to 2.5m, SW swell.

EAST LONDON TO MAPUTO:

WIND : S to SW 15 to 25 south of Richards Bay, otherwise N to NE 15 to 25.

VIS : Moderate in showers.

SEA STATE: 2.0m, NE swell.

MOZAMBIQUE CHANNEL:

WIND : Variable 05 to 10 in the south, otherwise NW 10 to 15.

VIS : Good, but moderate in showers and thundershowers in the north.

54

Page 55: Navigacine Hidrometeorologija

7.6 02-15 1300 UTC

FQZA30 FAPR 151300

SECURITE:

=========

WEATHER BULLETIN FOR COASTAL WATERS UP TO 50 NAUTICAL MILES

SEAWARD. ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 15th

FEBRUARY 2016 at 13:00 UTC.

FORECAST VALID FROM 152200 TO 162200 UTC: WIND IN KNOTS, WAVE

HEIGHTS IN METRES. NO SEA STATE GIVEN IF WAVES LESS THAN 2M.

NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.

INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5. WAVE

HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS WHICH MAY BE ACCOMPANIED BY

INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.

THESE ESTIMATES OF WINDS AND WAVES DO NOT TAKE INTO ACCOUNT THE

ENHANCING EFFECTS OF THE AGULHAS CURRENT OFF THE SOUTH AFRICAN EAST

COAST.

NOTE: WX OBSERVATIONS.

======================

COULD ALL VESSELS EXPERIENCING UNEXPECTED, SEVERE WX/SEA STATE PLEASE MAKE EVERY EFFORT TO REPORT THIS TO SAWS VIA CAPE TOWN RADIO.

55

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ALERTS:

-------

WARNINGS:

---------

1. Moderate visibility in showers are expected between East London and Richards Bay.

WATCHES:

--------

Nil.

ADVISORIES:

-----------

Nil.

ABNORMAL WAVE CONDITIONS:

=========================

Nil.

CUNENE RIVER TO WALVIS BAY:

WIND : S to SE 10 to 20.

VIS : Good.

SEA STATE: 2.0m in places, SW swell.

WALVIS BAY TO ORANGE RIVER:

WIND : S to SE 10 to 20.

VIS : Good.

SEA STATE: 2.5 to 3.5m in places, SW swell.

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ORANGE RIVER TO CAPE AGULHAS:

WIND : S to SE 15 to 25 reaching 30 south of Cape Columbine by Tuesday morning,

spreading to Lambert’s Bay in the afternoon.

VIS : Good.

SEA STATE: 2.0 to 2.5m, reaching 3.0m in the Cape Point region, SW swell.

CAPE AGULHAS TO EAST LONDON:

WIND : W to SW 10 to 20 east of Stilbaai, otherwise SE 10 to 15 spreading to East London

by midday Tuesday.

VIS : Good.

SEA STATE: 2.0 to 2.5m, SW swell.

EAST LONDON TO MAPUTO:

WIND : N to NE 10 to 20 in the north at first, otherwise S to SW 15 to 25 reaching 30 at

times.

VIS : Moderate in showers and thundershowers.

SEA STATE: 2.0m, NE swell.

MOZAMBIQUE CHANNEL:

WIND : E to NE 10 to 15, but SW 10 to 15 in the north.

VIS : Good, but moderate in showers and thundershowers in the north.

57

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8. LAIVO ŽURNALAS

Hours Winds Sea State of

Weather

Weather and

visibility

Barometer

(mmHg)

0600 SW4 SW C2 10.0 761

1800 S4 SW C1 10.0 760

0600 SW3 S C3 10.0 761

1800 S to SE 4 S C2 10.0 761

0600 SW to W 4 SW C4 10.0 762

1800 S to SE 5 S C3 10.0 763

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IŠVADOS

Susisteminus visą surinktą medžiagą ir atlikus užduotis aiškiai matome, jog prognozės yra gan

tikslios. Per 24 valandas pastebimi tik maži nukrypimai nuo faktinių orų, nors reiso metu nebuvo

jokių pavojingų meteorologinių darinių, kurie gal būt galėtų įtakoti prognozių tikslumą. Maršrutas

suplanuotas atsižvelgiant į meteorologines sąlygas, naudojantis locijoje pateigta medžiaga ir

papildomais šaltiniais.

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LITERATŪROS SĄRAŠAS

Hidrometeorologinės prognozės (http://passageweather.com)

Laivo aprašymas (http://www.qm2.org.uk/index.html)

Metinės vėjų statistikos (http://www.windfinder.com)

Neoficialūs Afrikos uostų aprašymai (http://ports.co.za)

Locija (Africa Pilot Volume II) (NP2)

Papildoma informaciją apie uostus (NP 286(1): Admiralty List of Radio Signals Vol. 6)

Potvynių lentelės (Admirality Tide Tables Volume II)

Navtex žinutės (http://weather.gmdss.org/VII.html)

60