Buku Lotsogolera Kuyenda pa Nyanja Yakuya
Kuyenda pansi pa nyanja ndi luso lomwe limaphatikiza chidziwitso chaukadaulo, kuzindikira zachilengedwe, kukonzekera mosamala, komanso kutsatira mosamala njira zotetezera. Mosiyana ndi kuyenda m'mphepete mwa nyanja, komwe kumapereka zizindikiro zambiri zowoneka, kuyenda pansi pa nyanja kumafuna oyendetsa sitima kudalira zida, kuwerengera, ndi kutanthauzira nyengo ndi deta yamakono. Nkhaniyi ikupereka chitsogozo chokwanira chothandiza kumvetsetsa mfundo, zida, ndi njira zabwino zoyendera pansi pa nyanja.
1. Kumvetsetsa Mfundo Zoyambira za Kuyenda pa Nyanja Yakuya
Kuyenda pansi pa nyanja kumafanana ndi mtunda wautali kuchokera kumtunda, mawonekedwe ochepa, komanso kusintha kwa nyengo mwachangu. Chifukwa chake, cholinga chachikulu cha kuyenda ndi kuonetsetsa kuti sitimayo ikuyenda bwino kuchokera komwe ikupita kupita komwe ikupita, mosamala, komanso motsatira malamulo apadziko lonse lapansi.
Mfundo zitatu zofunika kuzidziwa bwino ndi izi:
1. Kukhazikitsa malo (kutsimikiza malo): kudziwa malo a sitimayo nthawi ndi nthawi pogwiritsa ntchito GPS ndi/kapena njira zosungira.
2. Kukonzekera njira: kukonzekera njira yotumizira katundu, malo olowera, ndi njira zina ngati pakhala kusintha.
3. Kupewa kugundana: kusunga mtunda wotetezeka kuchokera ku zombo zina motsatira COLREGs (Malamulo Apadziko Lonse Oletsa Kugundana pa Nyanja).
M'nyanja yakuya, kulangiza m'mabuku olembera za kayendedwe ka ndege, kuyang'anira momwe zinthu zilili, ndi kulumikizana nazonso ndi zinthu zomwe sizingakambirane.
2. Kukonzekera Njira: Maziko a Kuyenda Motetezeka
Ulendo wabwino umayamba sitimayo isananyamuke. Kukonzekera njira ya pansi pa nyanja nthawi zambiri kumakhala ndi magawo angapo:
a) Dziwani njira yaikulu ndi njira zina
Njira zazikulu zimasankhidwa kutengera mtunda, chitetezo, ndi nyengo. Njira zina zimakonzedwa ngati pachitika mphepo yamkuntho, kulephera kwa makina, kapena madera ambiri odutsa magalimoto.
b) Kuyang'ana machati ndi zofalitsa za sitima yapamadzi
Gwiritsani ntchito matchati aposachedwa a sitima zapamadzi (matchati a mapepala kapena ECDIS) ndi mabuku monga:
- Malangizo Oyendera Panyanja/Mabuku Oyendetsa Ndege
- Zidziwitso kwa Oyendetsa Mapazi (zosintha za zoopsa/zolemba zoyendera)
- Mndandanda wa Magetsi (mndandanda wa magetsi/magetsi oyendera)
- Matebulo a mafunde ndi malo owonera mafunde (ngakhale kuti ndi ofunikira kwambiri pafupi ndi gombe, mafunde akuya a nyanja amakhudzabe njira ndi momwe mafuta amagwiritsidwira ntchito)
c) Khazikitsani malo olowera ndi malire a chitetezo
Malo olowera amathandiza kuti sitimayo iyende bwino. Kuphatikiza apo, ikani malire monga:
- mtunda wotetezeka kuchokera kumadera oopsa,
- malire ocheperako a kuya (ngati kuli koyenera),
- malo oti anthu apiteko kapena malo ophunzitsira usilikali.
d) Kuwerengera kwa ETA ndi mafuta
Nthawi yoyerekeza yofika (ETA) ndi momwe mungagwiritsire ntchito ziyenera kuganiziridwa:
- liwiro la sitima,
– mphepo ndi mafunde (kuwonjezera kukana),
– mphamvu yamagetsi (imatha kufulumizitsa kapena kuchepetsa liwiro),
- mfundo ya "kuyendetsa nyengo" kuti tipewe mavuto aakulu.
3. Zipangizo Zoyambira Zoyendera M'nyanja Yakuya
Kuyenda kwamakono kumathandizidwa kwambiri ndi makina amagetsi. Komabe, mfundo yofunika kwambiri ndi yakuti musadalire gwero limodzi. Zipangizo zotsatirazi zimagwiritsidwa ntchito kwambiri:
a) GPS ndi GNSS
GPS imapereka malo olondola komanso mwachangu. Komabe, oyendetsa maulendo ayenera kumvetsetsa zofooka zake, monga kusokoneza ma signal, chinyengo, kapena zolakwika zolowera.
b) ECDIS (Kuwonetsera ndi Kudziwitsa Matchati Amagetsi)
ECDIS imawonetsa mamapu apakompyuta ophatikizidwa ndi deta ya malo, radar, AIS, ndi masensa ena. Onetsetsani kuti:
– mamapu (ENC) amasinthidwa nthawi zonse,
- makonda a alamu (mawonekedwe achitetezo, cholakwika cha njira yodutsa) moyenerera,
- ogwiritsa ntchito amamvetsetsa njira zowonetsera ndi masikelo kuti asanyengedwe ndi "zoom yochulukirapo".
c) Radar ndi ARPA
Radar imathandiza kuzindikira zombo, mvula yamkuntho, ndi zinthu zomwe zili pamwamba pa nyanja. ARPA (Automatic Radar Plotting Aid) imaneneratu zoopsa za kugundana powerengera CPA (Closest Point of Approach) ndi TCPA (Time to CPA).
d) AIS (Kachitidwe Kodzizindikiritsa Kokha)
AIS imawonetsa umunthu ndi deta ya kayendedwe ka zombo zina. Komabe, AIS imadalira zomwe anthu akupereka ndipo ikhoza kukhala yolakwika, kotero iyenera kutsimikiziridwa ndi radar ndi kuwona.
e) Kampasi ya maginito ndi kampasi ya gyro
Kampasi ndi njira yolozera mbali. Kampasi ya gyro ndi yokhazikika kwambiri pa sitima zazikulu, koma imafunabe kuyang'aniridwa pafupipafupi kwa zolakwika za gyro.
f) Zipangizo zosungira zinthu zakale
Ma sextant, ma almanac a panyanja, ndi njira zowerengera (kuwerengera kosatha) zimagwiritsidwa ntchito ngati zosungira ngati zida zamagetsi zalephera. Pa maulendo ataliatali, luso limeneli limakhalabe lofunika ngati "njira yomaliza."
4. Njira Yoikira Malo: Musamangodalira GPS
Kuyika malo kuyenera kuchitika nthawi zonse ndikutsimikiziridwa. M'madzi akuya, machitidwe ofala ndi awa:
- GPS imakonza nthawi iliyonse yoikika ndikulemba mu log.
- Onaninso pogwiritsa ntchito radar (ngati pali cholinga), komwe kampasi ikupita, kapena kuwerengera DR.
– Dead Reckoning (DR): kuyerekeza malo kuchokera pamalo omaliza kutengera liwiro ndi njira, kenako kukonzedwa ndi mphamvu/mphepo kuti ikhale malo oyerekezeredwa (EP).
Ngati nyengo ilola ndipo ogwira ntchito ali ndi luso, kuyenda kwa zinthu zakuthambo kungapereke malo olondola. Ngakhale kuti sizigwiritsidwa ntchito kawirikawiri tsiku lililonse pa zombo zamakono, njira iyi ndi yothandiza pamene GNSS ili ndi vuto.
5. Kumvetsetsa Nyengo, Mafunde, ndi Mafunde
Nyanja yakuya imakhudzidwa kwambiri ndi machitidwe akuluakulu a nyengo. Chifukwa chake:
- Yang'anirani za nyengo ya panyanja (mphepo, mafunde, kuthamanga kwa mpweya).
- Dziwani kusintha kwa kuthamanga kwa mpweya mwachangu, kukwera kwa mpweya, ndi mitambo ya cumulonimbus yomwe imasonyeza mphepo yamkuntho.
- Gwiritsani ntchito njira yoyendera nyengo kuti mupeze njira yotetezeka komanso yotsika mtengo.
Mafunde a m'nyanja monga mafunde a equatorial, mafunde a transoceanic, kapena eddies amatha kukankhira chombo kutali ndi njira ndi makilomita angapo. Chifukwa chake, yesani "kukhazikika ndi kusunthika" (njira yamagetsi ndi liwiro) poyerekeza njira/liwiro la chombocho ndi njira ya GPS pamtunda (COG/SOG).
6. Malamulo a Chitetezo ndi Kupewa Kugundana
Nyanja zakuzama sizili ndi magalimoto ambiri. Sitima zazikulu zamalonda, zombo zosodza, ndi matanki nthawi zambiri zimadutsa m'njira zazikulu. Tsatirani mfundo izi:
- kutsatira ma COLREG,
- gwiritsani ntchito njira yowonera bwino (kuona ndi maso),
– musamangokhulupirira AIS,
- kusintha njira/liwiro m'njira yomveka bwino komanso yosavuta kuti zombo zina zimvetse.
Usiku, onetsetsani kuti magetsi oyendera akuyenda bwino ndipo sakubisika ndi katundu kapena kapangidwe ka sitimayo.
7. Kuyang'anira ndi Kusamalira Ntchito
Kuyenda bwino kumatsimikiziridwa ndi kayimbidwe ka wotchi nthawi zonse. Njira zabwino kwambiri ndi izi:
- kugawa bwino ntchito pakati pa OOW (Officer of the Watch), helmsman, ndi looking,
- kusintha kwa nthawi yokumana ndi alonda (malo, njira, nyengo, magalimoto),
- kujambula zolemba (malo, njira, liwiro, zochitika zofunika),
- Kuyang'ana zida nthawi ndi nthawi (kusintha kwa radar, ma alamu a ECDIS, kulumikizana kwa VHF/SSB).
Kutopa ndiye mdani wamkulu. Ndondomeko ya ntchito iyenera kuonetsetsa kuti ogwira ntchito akupuma mokwanira, chifukwa ngakhale zolakwa zazing'ono zimatha kukhala ndi zotsatirapo zazikulu panyanja yayikulu.
8. Zochitika Zadzidzidzi: Kukonzekera ndi Kuyankha
Mu nyanja yakuya, thandizo lingakhale kutali. Chifukwa chake:
- kuchita masewera olimbitsa thupi mwadzidzidzi (anthu akuba/anthu oyenda pansi pa nyanja, ozimitsa moto, kutuluka kwa madzi m'madzi),
- onetsetsani kuti wailesi ya EPIRB, SART, ndi GMDSS zili zokonzeka,
- konzani dongosolo lenileni la "kusiya"
- kumvetsetsa njira zothanirana ndi mavuto: Mayday, malo olumikizirana, mtundu wa ngozi, kufunikira thandizo.
Ngati njira zamagetsi zalephera kuyenda, sinthani nthawi yomweyo ku njira zosungiramo zinthu: chepetsani liwiro ngati pakufunika kutero, onjezerani kuyang'anitsitsa, gwiritsani ntchito DR/compass, ndikukhazikitsa kulumikizana ndi zombo zozungulira.
9. Malangizo Othandiza Othandizira Kuyenda Mogwira Mtima
Makhalidwe ena omwe nthawi zambiri amasiyanitsa oyendetsa sitima odalirika:
- Nthawi zonse yang'anani deta kuti "kodi ndi zomveka?" Ngati malowo agwera mwadzidzidzi, pezani chomwe chikuyambitsa.
– Musachedwetse zisankho pamene chiopsezo cha ngozi chikuwonjezeka.
- Pangani dongosolo losavuta komanso losavuta kutsatira, osati njira yovuta yomwe ndi yovuta kuitsatira.
- Sinthani mamapu ndi mapulogalamu musanayende panyanja.
- Khalani ndi chizolowezi chowona pakati pa GPS, radar, kampasi, ndi speed log.
Mapeto
Kuyenda pansi pa nyanja ndi kuphatikiza kukonzekera bwino njira, kugwiritsa ntchito bwino zida, kumvetsetsa nyengo ndi mafunde, komanso kusunga bwino mawotchi ndi chitetezo. Zipangizo zamakono monga GPS, ECDIS, radar, ndi AIS zimathandiza, koma woyendetsa bwino amasunga njira zosungira deta ndipo nthawi zonse amatsimikizira deta. Ndi njira zoyenera, kuyang'anira nthawi zonse, komanso kukonzekera zadzidzidzi, kuyenda pansi pa nyanja kungakhale kotetezeka, kothandiza, komanso kowongoleredwa.
Ngati mukufuna, nditha kusintha nkhaniyi kuti igwirizane ndi nkhani inayake—monga chitsogozo cha bwato losodza, sitima yoyendera, sitima yonyamula katundu, kapena zochitika za sitima yodutsa nyanja—zokhala ndi mndandanda wa zinthu zoti musankhe musananyamuke komanso zomwe muyenera kuchita nthawi zonse.
