Cov iav loj helical ua lub luag haujlwm tseem ceeb hauv kev siv marine, muab kev ua haujlwm tsis sib xws thiab ua haujlwm ntev hauv ntau lub tshuab marine. Cov iav no yog tus cwj pwm los ntawm lawv cov hniav, uas tso cai rau kom muaj kev sib koom ua ke zoo dua thiab txo qis suab nrov, ua rau lawv zoo tagnrho rau cov chaw hauv dej hiav txwv uas muaj kev ntseeg siab yog qhov tseem ceeb.

Ib qho ntawm cov kev siv tseem ceeb ntawm cov iav helical loj hauv kev lag luam marine yog nyob rau hauv propulsion systems. Lawv yog siv nyob rau hauv lub gearboxes ntawm ships thiab submarines, converting engine hwj chim mus rau hauv lub rotational quab yuam uas yuav tsum tau rau propel cov hlab ntsha los ntawm dej. Lub peev xwm ntawm cov iav helical los tswj cov khoom siv siab thaum tswj kev ua haujlwm du txhim kho kev ua haujlwm tag nrho thiab kev ntseeg tau ntawm cov nkoj hiav txwv marine.

Tsis tas li ntawd, cov iav loj helical feem ntau pom muaj nyob rau hauv winches thiab hoists, qhov tseem ceeb rau kev ua haujlwm docking thiab cargo tuav. Lawv cov qauv tsim ua kom ntseeg tau tias lawv tuaj yeem tswj cov khoom hnyav thiab tiv taus hnav, uas yog qhov tseem ceeb hauv cov dej hiav txwv hnyav. Qhov kev ntseeg siab no txo ​​qis qis qis thiab kev saib xyuas cov nqi, ua rau lawv nyiam xaiv rau cov nkoj tsim khoom thiab cov neeg ua haujlwm.

Nyob rau hauv cov ntsiab lus ntawm offshore drilling rigs, loj helical iav yog ib qho tseem ceeb rau ntau yam machinery, xws li drilling thiab lifting khoom. Lawv cov kev ua tau zoo pab txhim kho cov txheej txheem rho tawm, kom ntseeg tau tias kev siv hluav taws xob tsawg tsawg thaum ua kom cov zis ntau tshaj.

Zuag qhia tag nrho, loj helical iav yog qhov tseem ceeb hauv kev lag luam marine, muab lub zog, kev ua haujlwm, thiab kev ua haujlwm ntev. Raws li kev siv thev naus laus zis, lawv lub luag haujlwm yuav nthuav dav, ntxiv dag zog rau kev ua haujlwm hauv hiav txwv thiab ua rau muaj kev nyab xeeb dua, muaj txiaj ntsig zoo rau kev ua dej hiav txwv.