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east iron is a cheap material cast iron can pollute sea water cast iron has mere corrosive than bronzes to sea water cast iron is more corrosive to sea water when it meets with bronzes
SEA WORTHINESS SEA TRIALS TRIAL-AND-ERROR DOCK TRIALS
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Natural barriers to sea water have been destroyed, The water table has gone down after droughts. Sea level has been continuously rising. Evaporation of water leaves salt behind.
alive; interesting lively; interesting alive; interested lively; interested
sea water temperature must never be warmer than 40 ℃ jacket water pressure should always be greater than the sea water pressure jacket water temperature must always be less than 60 ℃ jacket water pressure must always be less than the sea water pressure
surprised excited frightened interested
exploring having exploring to be exploring to explore
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the lifeboat will always fall into the sea in a upright position even dropped into sea upside down the lifeboat will automatically turn upright the lifeboat will normal drop onto boat deck, teetered there momentarily and then rolledover into sea the lifeboat fell often, normally freely, from its stow position sea"
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interesting; laughing interesting; laugh interested; laugh interested; laughing