Presentation Posted August 3, 2016 #1 Share Posted August 3, 2016 (edited) The pool water on our cruise was sloshing around a lot. I asked if they use ocean water in the pools and confirmed they did. Why don't they use fresh water in the pools? Edited August 3, 2016 by Presentation Link to comment Share on other sites More sharing options...
Micahs Grandad Posted August 3, 2016 #2 Share Posted August 3, 2016 Fresh water would not slosh around just as much? Link to comment Share on other sites More sharing options...
ray98 Posted August 3, 2016 #3 Share Posted August 3, 2016 ....because there is no point in wasting all those resources involved in desalinating water just to fill a pool. Link to comment Share on other sites More sharing options...
figdu Posted August 3, 2016 #4 Share Posted August 3, 2016 Don't have the answer why but only Sunshine and Vista have freshwater pools. Link to comment Share on other sites More sharing options...
Bookbug53 Posted August 3, 2016 #5 Share Posted August 3, 2016 The pool water on our cruise was sloshing around a lot. I asked if they use ocean water in the pools and confirmed they did. Why don't they use fresh water in the pools? Salt water a bit more plentiful? Much easier to obtain for cleaning and refilling? Less chlorine smell? And using a chlorine generator with salt water enables the pool to create its own. In a manner speaking. So, in a word. Money. :) Link to comment Share on other sites More sharing options...
RuthlessBoss Posted August 3, 2016 #6 Share Posted August 3, 2016 ....because there is no point in wasting all those resources involved in desalinating water just to fill a pool. We need it to drink. Link to comment Share on other sites More sharing options...
chengkp75 Posted August 3, 2016 #7 Share Posted August 3, 2016 Salt water a bit more plentiful? Much easier to obtain for cleaning and refilling? Less chlorine smell? And using a chlorine generator with salt water enables the pool to create its own. In a manner speaking. So, in a word. Money. :) I don't know of any ship that uses a chlorine generator to chlorinate their salt water pools. Every ship I know uses liquid chlorine whether the water is salt or fresh. Given the requirement to drain and clean the pool weekly, the cost to produce or buy fresh water for the pool is not warranted. Additionally, if the ship is outside 20 miles from shore, and using salt water, the pool can be switched to "flow through" mode, where sea water is continuously pumped into the pool, and the overflow goes out the rim gutter and back to the sea. In this mode, no chlorination is required, since there is no recirculation of the water. However, when in flow through, and the ship returns within 20 miles of shore, the pool must be drained or switched to recirculation mode, and chlorination started, which requires closing the pool for an hour or two until chlorine levels are correct, so unless there are more than one sea day in a row, ships will generally stay on recirculation mode even with sea water. Link to comment Share on other sites More sharing options...
Micahs Grandad Posted August 3, 2016 #8 Share Posted August 3, 2016 I don't know of any ship that uses a chlorine generator to chlorinate their salt water pools. Every ship I know uses liquid chlorine whether the water is salt or fresh. Given the requirement to drain and clean the pool weekly, the cost to produce or buy fresh water for the pool is not warranted. Additionally, if the ship is outside 20 miles from shore, and using salt water, the pool can be switched to "flow through" mode, where sea water is continuously pumped into the pool, and the overflow goes out the rim gutter and back to the sea. In this mode, no chlorination is required, since there is no recirculation of the water. However, when in flow through, and the ship returns within 20 miles of shore, the pool must be drained or switched to recirculation mode, and chlorination started, which requires closing the pool for an hour or two until chlorine levels are correct, so unless there are more than one sea day in a row, ships will generally stay on recirculation mode even with sea water. thanks for the info very interesting Link to comment Share on other sites More sharing options...
SadieN Posted August 3, 2016 #9 Share Posted August 3, 2016 (edited) Salt water a bit more plentiful? Much easier to obtain for cleaning and refilling? Less chlorine smell? And using a chlorine generator with salt water enables the pool to create its own. In a manner speaking. So, in a word. Money. :) Even a pool using a salt generator pool needs a dollop of liquid chlorine and acid on occasion. Also the plates are a PITA to clean with acid. Edited August 3, 2016 by SadieN Link to comment Share on other sites More sharing options...
nealstuber Posted August 3, 2016 #10 Share Posted August 3, 2016 The pool water on our cruise was sloshing around a lot. I asked if they use ocean water in the pools and confirmed they did. Why don't they use fresh water in the pools? The water sloshes when the ship rocks, has nothing to do with what kind of water it is. Link to comment Share on other sites More sharing options...
beachbum53 Posted August 3, 2016 #11 Share Posted August 3, 2016 The pool water on our cruise was sloshing around a lot. I asked if they use ocean water in the pools and confirmed they did. Why don't they use fresh water in the pools? Because you won't know if you're tasting sea water or pee water.:D:D:D Link to comment Share on other sites More sharing options...
cajunfla Posted August 4, 2016 #12 Share Posted August 4, 2016 Even a pool using a salt generator pool needs a dollop of liquid chlorine and acid on occasion. Also the plates are a PITA to clean with acid. We purchased a home with a salt water pool 2 years ago. Checking chemicals weekly, I have only added salt so far. Nothing I have read mentions adding liquid chlorine at any time. Have not needed to clean the plates, and they are about 6 years old. Am I missing something, or just been lucky? Link to comment Share on other sites More sharing options...
First and Ten Posted August 4, 2016 #13 Share Posted August 4, 2016 (edited) We purchased a home with a salt water pool 2 years ago. Checking chemicals weekly, I have only added salt so far. Nothing I have read mentions adding liquid chlorine at any time. Have not needed to clean the plates, and they are about 6 years old. Am I missing something, or just been lucky? Do you have a salt water pool or a pool with a salt cell that produces chlorine? Edited August 4, 2016 by First and Ten Link to comment Share on other sites More sharing options...
nealstuber Posted August 4, 2016 #14 Share Posted August 4, 2016 We purchased a home with a salt water pool 2 years ago. Checking chemicals weekly, I have only added salt so far. Nothing I have read mentions adding liquid chlorine at any time. Have not needed to clean the plates, and they are about 6 years old. Am I missing something, or just been lucky? You've been lucky to live in a place that does not have hard water or are refilling your pool with water from a softener. We had a very similar experience to you when we lived in TN, so much so that the first thing I did when we moved to south TX was install a saline chlorinator on our pool. The plates constantly caked up and it got worse and worse (we don't have to dump our water in the winter). After 2 years and 3 systems, I gave up on it and went back to tabs. Link to comment Share on other sites More sharing options...
maldenmusic Posted August 4, 2016 #15 Share Posted August 4, 2016 I knew they were salt water but I just thought it was because it was free. Never knew the science behind it. Link to comment Share on other sites More sharing options...
cajunfla Posted August 4, 2016 #16 Share Posted August 4, 2016 Do you have a salt water pool or a pool with a salt cell that produces chlorine? Salt cell Link to comment Share on other sites More sharing options...
ConnecticutFlamingo Posted August 4, 2016 #17 Share Posted August 4, 2016 Mostly because the pools are emptied late every night and refilled with sea water. Ship can't carry that much water and too expensive to desalinate. Link to comment Share on other sites More sharing options...
SadieN Posted August 4, 2016 #18 Share Posted August 4, 2016 We purchased a home with a salt water pool 2 years ago. Checking chemicals weekly, I have only added salt so far. Nothing I have read mentions adding liquid chlorine at any time. Have not needed to clean the plates, and they are about 6 years old. Am I missing something, or just been lucky? We have EXTREMELY hard water. Sent from my iPhone using Forums mobile app Link to comment Share on other sites More sharing options...
riclop Posted August 5, 2016 #19 Share Posted August 5, 2016 The pool water on our cruise was sloshing around a lot. I asked if they use ocean water in the pools and confirmed they did. Why don't they use fresh water in the pools? Will that make a difference??? Link to comment Share on other sites More sharing options...
Purvis1231 Posted August 5, 2016 #20 Share Posted August 5, 2016 The pools may have salt water but there are also chemicals added. The waterslides are recirculated freshwater with chemicals added. Link to comment Share on other sites More sharing options...
nealstuber Posted August 5, 2016 #21 Share Posted August 5, 2016 We have EXTREMELY hard water. Sent from my iPhone using Forums mobile app Then I would love to know what system you have. Just back from a 7 Alaska cruise which included 2 days up front and back in Seattle. My pool is a mess cause the tabs don't last that long. Link to comment Share on other sites More sharing options...
nealstuber Posted August 5, 2016 #22 Share Posted August 5, 2016 (edited) I'm tempted to start a new thread titled: "Why do they use sea water in the toilets" and then in the post complain that "the vacuum sound wakes me up at night and does not handle female products as well" Edited August 5, 2016 by nealstuber Link to comment Share on other sites More sharing options...
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