15 meter nkoj ntoo marine hlau nplaum rau tsav hlua ntaiv lwm tus neeg ntoo kauj ruam thimble pab
Pilot Ladder nrug deb ntawm ob kauj ruam yog 330 ± 20mm Cov khoom siv: Cov ntoo tawv Cov khoom siv qis tshaj plaws 4 cov kauj ruam yog cov roj hmab nrog cov hlua steel Cov kauj ruam: nyob ib ncig ntawm 30 kauj ruam Embarkation Ladder nrug ntawm ob kauj ruam yog 330 ± 20mm Cov khoom siv: Cov khoom siv tawv tawv ntawm qhov qis tshaj 4 kauj ruam yog cov roj hmab daim hlau nrog cov hlua hlau
