To reduce stress on the towing hawser when towing astern (ocean tow),the hawser should be ().
A、secured to the aftermost fitting on the towing vessel
B、just touching the water
C、underwater
D、as short as possible
A、secured to the aftermost fitting on the towing vessel
B、just touching the water
C、underwater
D、as short as possible
A、reduce the water pressure on the hull B、reduce the water leaking around the plugs C、prevent progressive flooding D、reduce the possibility of stress fractures
A、to reduce heat stress B、to reduce low temperature corrosion C、to improve firing and starting performance D、fuel saving
A、reduce spud can bearing pressure B、keep the unit level and reduce overloading C、reduce stresses on the hull D、minimize the potential for punch-through
A、sagging with tensile stress on main deck B、sagging with compressive stress on main deck C、hogging with tensile stress on main deck D、hogging with compressive stress on main deck
A、A.sagging with tensile stress on main deck B、B.sagging with compressive stress on main deck C、C.hogging with tensile stress on main deck D、D.hogging with compressive stress on main deck
A、reduce the engine driven fuel pump outlet pressure B、retard the fuel injector timing to reduce power C、increase the fuel rack setting D、reduce the load on the engine
A、lessening the effect of environmental forces B、even and symmetrical variable loading C、local concentration of heavy consumables D、increasing the metacentric height
A、Reduces SAN cost B、Reduces network cost C、Reduces administration costs D、Reduces software licensing cost
A、greater at the bow and stern B、reduced at the bow and stern C、uniform over the length of the vessel D、uniform over the length of the vessel,with the exception of the machinery spaces,where it is reduced due to increased stresses