Kugawa ndi Kugwira Ntchito kwa Zipangizo Zoyendera Panyanja
Kuyenda panyanja ndi mndandanda wa zochitika zoyendetsera sitima kuchokera pamalo ena kupita kwina mosamala, moyenera, komanso motsatira malamulo oyendetsera sitima. M'machitidwe ake, kuyenda bwino sikudalira luso la ogwira ntchito pa sitimayo, komanso kudalirika kwa zida zoyendetsera sitimayo. Zida zimenezi zimathandiza kudziwa malo, kuyeza njira ndi liwiro, kuzindikira zoopsa kuzungulira sitimayo, kulankhulana, ndikuonetsetsa kuti sitimayo ikuyendabe panjira yomwe yakonzedwa. Ndi kupita patsogolo kwa ukadaulo, njira zoyendetsera sitima zapamadzi zasintha kuchoka pa zida zosavuta zowunikira kupita ku zida zamagetsi zolumikizidwa m'maukonde amakono. Nkhaniyi ikufotokoza za magulu a zida zoyendetsera sitima zapamadzi ndi ntchito zake zazikulu, kotero owerenga amvetsetsa udindo wa chipangizo chilichonse pothandizira chitetezo cha sitima.
1. Kugawa Zida Zoyendera panyanja Kutengera Ntchito
Kawirikawiri, zida zoyendetsera sitima zapamadzi zitha kugawidwa m'magulu angapo: (1) zodziwira malo, (2) zodziwira mutu, (3) mita ya liwiro ndi mtunda, (4) zodziwira zinthu ndi zoopsa, (5) zida zokonzera mapu ndi ulendo, (6) kulumikizana ndi kuzindikira, ndi (7) zida zodzitetezera pakuyenda ndi kuyang'anira.
A. Zipangizo Zokonzera Malo
Zipangizo zoyikira malo ndiye maziko a kayendetsedwe ka sitima zamakono, kuonetsetsa kuti sitimayo ikudziwa malo ake enieni. Zipangizo zazikulu mu gululi ndi izi:
1. GPS (Makina Oyang'anira Malo Padziko Lonse) / GNSS (Makina Oyendetsera Satellite Padziko Lonse)
GNSS ndi mawu ofala omwe akuphatikizapo GPS (United States), GLONASS (Russia), Galileo (European Union), ndi BeiDou (China). Ntchito yake ndikuwerengera molondola malo a sitimayo (latitude-longitude), liwiro (liwiro pamwamba pa nthaka), ndi nthawi pogwiritsa ntchito zizindikiro za satelayiti. Potumiza, GNSS imagwiritsidwa ntchito kuyang'anira malo nthawi yeniyeni, kuonetsetsa kuti sitimayo sizipatuka panjira zawo, komanso kuthandiza kuyendetsa bwino polowa m'madoko.
2. LORAN (Long Range Navigation) ndi Radio Navigation Systems
Dongosololi tsopano likuchepa kugwiritsidwa ntchito m'madera ena, koma lingaliro lake ndi lofunika kwambiri m'mbiri: kudziwa malo kuchokera ku zizindikiro za wailesi zochokera kugombe. Mayiko ena akupanga njira zosungiramo zinthu zochokera kumtunda kuti ayembekezere kusokonezedwa kwa GNSS.
3. Sextant (Kuyenda mu Astronomical)
Sextant ndi chida chowunikira chachikhalidwe choyezera ngodya pakati pa zinthu zakuthambo (dzuwa, nyenyezi) ndi mlengalenga. Ntchito yake ndikuzindikira komwe sitima ili kudzera mu kuwerengera zakuthambo. Ngakhale sichigwiritsidwa ntchito kawirikawiri ngati njira yoyamba yoyendetsera, sextant imakhalabe yofunikira ngati njira yobwezera ngati magetsi alephera.
B. Zipangizo Zodziwira Njira (Kutsogolera ndi Kunyamula)
Kulunjika kwa uta wa chombo (kulunjika) ndi komwe chinthu (chotengera) chikupita ndizomwe zimapangitsa kuti ziwongolero zichitike komanso kupewa kugundana.
1. Kampasi ya Maginito
Kampasi ya maginito imagwiritsa ntchito mphamvu ya maginito ya Dziko Lapansi kusonyeza kumpoto kwa maginito. Imagwira ntchito ngati njira yoyambira yolozera, makamaka pamene magetsi alephera kugwira ntchito, chifukwa sichidalira mphamvu yamagetsi. Kampasi iyi iyenera kukonzedwa kuti ione ngati pali kusintha (mphamvu ya maginito ya sitimayo) komanso kusiyana (kusiyana pakati pa kumpoto kwa maginito ndi kumpoto kwenikweni).
2. Gyrocompass
Gyrocompass imasonyeza kumpoto kwenikweni pogwiritsa ntchito mfundo ya gyroscope, zomwe zimapangitsa kuti ikhale yokhazikika komanso yolondola poyenda mtunda wautali. Ntchito yake ndi yofunika kwambiri ngati chisonyezero cha ma autopilots, ma radar, ndi ma chart amagetsi, kuonetsetsa kuti zipangizo zonse zimagwiritsa ntchito chisonyezero chofanana.
3. Kunyamula Zipolopolo ndi Zowoneka
Kampasi imagwiritsidwa ntchito poyesa kutengera kwa chinthu (monga nyali kapena chombo china) poyerekeza ndi njira ya sitimayo. Poyerekeza ma bearing angapo, woyendetsa sitimayo amatha kuwerengera malo kapena kuyang'anira chiopsezo cha kugundana.
C. Zipangizo Zoyezera Liwiro ndi Kutali
Kudziwa liwiro kumathandiza kuwerengera nthawi yoyembekezeredwa yofika (ETA), kugwiritsa ntchito mafuta, komanso kuwongolera kayendedwe ka sitimayo.
1. Logi (Logi Yothamanga)
Chikalata cha liwiro chimayesa liwiro la sitimayo m'madzi. Izi ndizothandiza powerengera momwe magetsi akuyendera komanso momwe amayendera poyerekeza ndi liwiro la GNSS (liwiro pamwamba pa nthaka).
2. Echo Sounder (Chipima Kuzama)
Ogwiritsa ntchito mawu omveka bwino amagwiritsa ntchito mafunde a phokoso poyesa kuya kwa madzi pansi pa keel ya sitimayo. Ntchito yawo ndi yofunika kwambiri m'madzi osaya, m'misewu yoyendera sitima, komanso akamayandikira madoko kuti asagwere pansi.
D. Zipangizo Zodziwira Zinthu ndi Zoopsa
Gulu ili limathandiza sitimayo "kuona" malo ozungulira, kuphatikizapo m'malo omwe sakuwoneka bwino.
1. Radar (Kuzindikira ndi Kuyang'ana Ma Radio)
Radar imazindikira zinthu zozungulira sitimayo potulutsa mafunde a wailesi ndikulandira kuwala kwawo. Ntchito za Radar zimaphatikizapo kuzindikira zombo zina, nthaka, ma buoy, mvula yamphamvu, komanso kuthandiza kuyenda mu chifunga. Radar imathandizanso kuwerengera CPA (pafupi kwambiri) ndi TCPA (nthawi yopita ku CPA) kuti apewe kugundana, makamaka akaphatikizidwa ndi ARPA.
2. ARPA (Chithandizo Chopangira Ma Radar Okhaokha)
ARPA ndi chida cha radar chomwe chimatsata zokha zolinga ndikuwerengera deta yoyendera. Ntchito yake imathandiza apolisi omwe akuyang'anira kuzindikira zoopsa za kugundana, kusankha njira zotetezeka, komanso kutsatira malamulo a COLREG (International Regulations for Preventing Collisions at Sea).
3. AIS (Kachitidwe Kodzizindikiritsa Kokha)
AIS imafalitsa ndi kulandira chidziwitso chokhudza kudziwika kwa sitimayo (dzina, MMSI), malo, komwe ikupita, liwiro, ndi momwe imayendera. Ntchito yake ndikupititsa patsogolo chidziwitso cha momwe zinthu zilili, kuthandiza kulumikizana pakati pa sitimayo, komanso kuthandiza Vessel Traffic Services (VTS) poyang'anira kuchuluka kwa magalimoto omwe akuyenda.
E. Mapu ndi Zida Zokonzekera Ulendo
Kukonzekera njira ndi kuyang'anira malo kumafuna mapu olondola.
1. Tchati cha Pepala
Ngakhale kuti nthawi ya digito yapita patsogolo, matchati a mapepala a panyanja amagwiritsidwabe ntchito ngati zosungira kapena ngati chofunikira pa zombo zina. Amagwiritsidwa ntchito pokonzekera njira, kulemba malo pamanja, komanso kufotokozera ngati makina amagetsi alephera.
2. ECDIS (Kuwonetsera ndi Kudziwitsa Ma Tchati a Pakompyuta)
ECDIS ndi njira yovomerezeka yojambulira ma chart yamagetsi yomwe imawonetsa ma chart a digito nautical (ENCs) ndikulumikiza deta ya GNSS, radar overlays, AIS, ndi masensa ena. Ntchito zake zimaphatikizapo kukonzekera njira, machenjezo a mavuto (monga kuya kosaya, madera oletsedwa), ndi kuyang'anira mosalekeza kuyenda. Ngati yakonzedwa bwino, ECDIS imatha kuwonjezera chitetezo, koma kukhazikitsa koyenera ndikofunikira kuti tipewe kunyalanyaza ma alarm kapena kusokoneza njira.
F. Kulankhulana ndi Kuzindikira pa Kuyenda
Kuyenda panyanja sikungalekanitsidwe ndi kulankhulana, ponse pawiri kuti pakhale chitetezo komanso kulumikizana kwa magalimoto.
1. Wailesi ya VHF
VHF imagwiritsidwa ntchito polankhulana kwapafupi pakati pa zombo, zombo zopita ku doko, ndi zombo zopita ku VTS. Ntchito yake ndi yofunika kwambiri polumikizana panthawi yoyenda, kupereka chidziwitso choyenda, komanso kulankhulana mwadzidzidzi.
2. GMDSS (Dongosolo Loyang'anira Mavuto ndi Chitetezo cha Panyanja Padziko Lonse)
GMDSS ndi njira yolumikizirana zachitetezo cha panyanja yomwe imaphatikizapo zida zingapo monga DSC (Digital Selective Calling), EPIRB, NAVTEX, ndi SART. Ntchito yake ndikuwonetsetsa kuti zombo zitha kutumiza zizindikiro zamavuto ndikulandira zambiri zachitetezo cha panyanja (MSI), kuphatikiza machenjezo a nyengo ndi kuyenda.
3. NAVTEX
NAVTEX imalandira mauthenga odziyimira pawokha okhala ndi machenjezo okhudza kuyenda panyanja, kulosera za nyengo, ndi zambiri zokhudza chitetezo. Ntchito yake ndikuthandiza apolisi omwe akuyang'anira kusintha momwe njira ikuyendera popanda kufunikira kufufuza pamanja.
G. Zipangizo Zowunikira ndi Kuwongolera Kuyenda
1. Kuyendetsa yokha
Autopilot imasunga chombocho pamalo enaake (kutengera momwe chimagwirizanirana). Izi zimachepetsa ntchito ya wotchiyo ndipo zimasunga kukhazikika kwa njirayo, koma imafunikabe kuyang'aniridwa chifukwa momwe magetsi amayendera, mphepo, ndi magalimoto zimafunikira chiwongolero chamanja.
2. BNWAS (Bungwe Loyang'anira Maola Oyendera Mlatho)
BNWAS imaonetsetsa kuti apolisi omwe ali pantchito amakhala maso ndi alamu nthawi zonse. Dongosololi limaletsa ngozi zomwe zimachitika chifukwa cha kutopa kapena kugona ali pantchito.
3. Chojambulira Deta ya Ulendo (VDR)
VDR imalemba deta yokhudza kuyenda kwa sitimayo, kulumikizana, ndi masensa. Imagwira ntchito ngati "bokosi lakuda" la ndege, lofunika kwambiri pakufufuza ngozi ndi kuwunika chitetezo.
2. Kuphatikiza Makina Oyendera: Kuchokera ku Zida Zosiyana kupita ku Makina Ogwirizana
Zipangizo zamakono zoyendetsera sitima sizigwira ntchito zokha. Zombo zambiri zimagwiritsa ntchito kuphatikiza deta kudzera mu dongosolo la mlatho wolumikizidwa, zomwe zimathandiza kuti chidziwitso kuchokera ku GNSS, gyrocompass, radar, AIS, ndi ECDIS chigwirizane. Kuphatikiza kumeneku kumathandizira kulondola komanso kugwira ntchito bwino popanga zisankho. Komabe, kuphatikiza kumafunanso kumvetsetsa bwino kuchokera kwa ogwira ntchito, chifukwa kusasintha bwino, kulowetsa masensa molakwika, kapena kudalira kwambiri makina kungayambitse ngozi.
3. Mapeto
Kugawidwa kwa zida zoyendera panyanja kukuwonetsa kuti kuyenda motetezeka kumadalira kuphatikiza malo, kupita patsogolo, kuthamanga, kuzindikira zoopsa, kukonza ma chart ndi mapulani, kulumikizana, ndi machitidwe owunikira ndi kuwongolera. Kuyambira kampasi yamaginito ndi sextant, zomwe zimagwiritsidwa ntchito ngati zosunga zobwezeretsera zofunika, mpaka ECDIS, ARPA radar, AIS, ndi GMDSS, zomwe zimapanga maziko a kuyenda kwamakono, zida zonse zimagwira ntchito zowonjezera. Pomaliza, zida zapamwamba ziyenera kukhala zolinganizidwa bwino ndi maphunziro abwino, njira, ndi malangizo osamalira. Izi zimatsimikizira kuti zombo zimatha kuyenda motetezeka, moyenera, komanso mogwirizana ndi miyezo yapadziko lonse lapansi yachitetezo cha panyanja.
