LongHill44 Posted April 10, 2018 #1 Share Posted April 10, 2018 Would make sense as it would cut down on cost as well as provide a more consistent clean level of water. Does anyone know? Link to comment Share on other sites More sharing options...
momonthego17 Posted April 10, 2018 #2 Share Posted April 10, 2018 Salt water is in the pools and slides according to my 15 year old DD[emoji16] Sent from my iPad using Forums Link to comment Share on other sites More sharing options...
Cruiseman38 Posted April 10, 2018 #3 Share Posted April 10, 2018 As far I know, all the pools, slides, splash zones and hot tubs are already salt water. I'm sure someone will correct me if I'm wrong. Link to comment Share on other sites More sharing options...
Megan_Strick Posted April 10, 2018 #4 Share Posted April 10, 2018 Yes. Fresh water in hot tubs. Link to comment Share on other sites More sharing options...
scottydog123 Posted April 10, 2018 #5 Share Posted April 10, 2018 Splash Zone were also Fresh Link to comment Share on other sites More sharing options...
BNBR Posted April 10, 2018 #6 Share Posted April 10, 2018 There are ships that use fresh water if that is important to you. Link to comment Share on other sites More sharing options...
tafische Posted April 11, 2018 #7 Share Posted April 11, 2018 Depends on the ship. Sunshine are all fresh. Guessing the latest ships are as well, but cant confirm. Link to comment Share on other sites More sharing options...
RWolver672 Posted April 12, 2018 #8 Share Posted April 12, 2018 There is also fresh water showers by all of the pools to wash the salt water off. Link to comment Share on other sites More sharing options...
chengkp75 Posted April 12, 2018 #9 Share Posted April 12, 2018 Would make sense as it would cut down on cost as well as provide a more consistent clean level of water. Does anyone know? Older ships use salt water in most pools, some of the kids pools were fresh water, as you say, because it is free, and when outside of 12 miles from shore, it can be switched to "flow through" mode, and no chemicals or the chemical dosing equipment is needed. Flow through continually pumps sea water into the pool, and the excess flows from the rim gutters back to the sea. Since there is no recirculation of the water, and the pumping rate provides an adequate turn-over rate, no chemical sanitation is required. However, all pools, whether salt water or fresh, when within 12 miles of shore, must be on "recirculation" mode, where the water is pumped from the pool to a filter and back to the pool. Any pool in recirculation mode, whether salt or fresh, must have chemical sanitation (chlorine) added. Because during the transition between flow through and recirculation modes, the chlorine level will not meet the standards, the pools must be closed during this time, until the residual chlorine level reaches the required. This can take 2-4 hours depending on the volume of the pool. In order to minimize the disruption of passenger activities caused by closing the pool for this change over, most ships will not switch a salt water pool to flow through unless there are 2 or more sea days in a row, so the change can be done late at night. So, one of the advantages of sea water is negated, if the sea water pool is kept on recirculation mode all the time. This is why newer ships tend to have fresh water pools, as the disadvantages of fresh water are less than originally planned, and the savings in maintenance and construction (less costly piping) balance things out. Link to comment Share on other sites More sharing options...
ash-n-brensmom Posted April 12, 2018 #10 Share Posted April 12, 2018 Older ships use salt water in most pools, some of the kids pools were fresh water, as you say, because it is free, and when outside of 12 miles from shore, it can be switched to "flow through" mode, and no chemicals or the chemical dosing equipment is needed. Flow through continually pumps sea water into the pool, and the excess flows from the rim gutters back to the sea. Since there is no recirculation of the water, and the pumping rate provides an adequate turn-over rate, no chemical sanitation is required. However, all pools, whether salt water or fresh, when within 12 miles of shore, must be on "recirculation" mode, where the water is pumped from the pool to a filter and back to the pool. Any pool in recirculation mode, whether salt or fresh, must have chemical sanitation (chlorine) added. Because during the transition between flow through and recirculation modes, the chlorine level will not meet the standards, the pools must be closed during this time, until the residual chlorine level reaches the required. This can take 2-4 hours depending on the volume of the pool. In order to minimize the disruption of passenger activities caused by closing the pool for this change over, most ships will not switch a salt water pool to flow through unless there are 2 or more sea days in a row, so the change can be done late at night. So, one of the advantages of sea water is negated, if the sea water pool is kept on recirculation mode all the time. This is why newer ships tend to have fresh water pools, as the disadvantages of fresh water are less than originally planned, and the savings in maintenance and construction (less costly piping) balance things out. This is interesting. Thank you for explaining the differences in how they affect the ship and the cost effectiveness. I had always wondered and speculated that sea (salt) water was the most cost effective way to maintain ship pools. Now I know! Link to comment Share on other sites More sharing options...
JMAE Posted April 13, 2018 #11 Share Posted April 13, 2018 Older ships use salt water in most pools, some of the kids pools were fresh water, as you say, because it is free, and when outside of 12 miles from shore, it can be switched to "flow through" mode, and no chemicals or the chemical dosing equipment is needed. Flow through continually pumps sea water into the pool, and the excess flows from the rim gutters back to the sea. Since there is no recirculation of the water, and the pumping rate provides an adequate turn-over rate, no chemical sanitation is required. However, all pools, whether salt water or fresh, when within 12 miles of shore, must be on "recirculation" mode, where the water is pumped from the pool to a filter and back to the pool. Any pool in recirculation mode, whether salt or fresh, must have chemical sanitation (chlorine) added. Because during the transition between flow through and recirculation modes, the chlorine level will not meet the standards, the pools must be closed during this time, until the residual chlorine level reaches the required. This can take 2-4 hours depending on the volume of the pool. In order to minimize the disruption of passenger activities caused by closing the pool for this change over, most ships will not switch a salt water pool to flow through unless there are 2 or more sea days in a row, so the change can be done late at night. So, one of the advantages of sea water is negated, if the sea water pool is kept on recirculation mode all the time. This is why newer ships tend to have fresh water pools, as the disadvantages of fresh water are less than originally planned, and the savings in maintenance and construction (less costly piping) balance things out. Thanks for the info, always like leaning. Link to comment Share on other sites More sharing options...
Organized Chaos Posted April 13, 2018 #12 Share Posted April 13, 2018 Thanks for the info, always like leaning.Just be careful not to fall over. ;p Link to comment Share on other sites More sharing options...
JMAE Posted April 13, 2018 #13 Share Posted April 13, 2018 Oops Sent from my XT1585 using Forums mobile app Link to comment Share on other sites More sharing options...
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