bobdole369
Diamond Member
Just specced 7 miles of *stranded* CAT6 for a project. Shipboard, Solid core won't cut it. about 75 drops.
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7 miles of CAT6
- Thread starter bobdole369
- Start date
Maybe trying to get a rise out of the "standards police." Since this is a boat, I already know most standards go out the window any way. Solid core isn't meant to move a lot so a rolling boat would not be the best place for it.
Stranded cable just has a higher loss, so results vary when you start getting to the extremes. So 100 meters of stranded might not test to the rating of the cable. Right around 30-35 meters cat6 stranded tends to test out as "cat5e" on our testers. The main problem is most home users don't have a clue / equipment to properly terminate it which makes it run like crap.
Being shipboard, are they making you environment seal them all with those "sealing" keystones?
Stranded cable just has a higher loss, so results vary when you start getting to the extremes. So 100 meters of stranded might not test to the rating of the cable. Right around 30-35 meters cat6 stranded tends to test out as "cat5e" on our testers. The main problem is most home users don't have a clue / equipment to properly terminate it which makes it run like crap.
Being shipboard, are they making you environment seal them all with those "sealing" keystones?
Could be more than 1 cable a drop / loc.
My guess would be normal water/grease resistant housings with a cover. Same as is used in industrial environments.
bobdole369
Diamond Member
Imagoon is right. 8-10 cables per drop. No question. When the total tally came out and we accounted for wastage and extra I was shocked that the number was over 7 miles in total length. Thought I'd share - thats all.
We've done some fiber, the issue is cost on this boat. It doesn't buy us anything more and there is indeed a budget. Plus it ain't just data.
Stranded core CAT6 is more than sufficient, most runs are less than a hundred feet, with one set needing about 170 feet. We only need 100mbit, and some of the cables aren't for data but as an AV balun.
It's a luxury yacht, so most of them get normal keystones, but ones in areas like the engine room, lazarette, flybridge do indeed need some form of waterproofing. It's usually done with screw or snap-on covers on the outside and we use a waterproof sealant on the punchdown terminals before you put on the hood. The whole thing then gets coated in marine grade silicone before its secured.
We've done some fiber, the issue is cost on this boat. It doesn't buy us anything more and there is indeed a budget. Plus it ain't just data.
Stranded core CAT6 is more than sufficient, most runs are less than a hundred feet, with one set needing about 170 feet. We only need 100mbit, and some of the cables aren't for data but as an AV balun.
It's a luxury yacht, so most of them get normal keystones, but ones in areas like the engine room, lazarette, flybridge do indeed need some form of waterproofing. It's usually done with screw or snap-on covers on the outside and we use a waterproof sealant on the punchdown terminals before you put on the hood. The whole thing then gets coated in marine grade silicone before its secured.
That is only roughly 40 boxes of cable. When you start using AV baluns and the like the amount of cable you need goes up a lot.
bobdole369
Diamond Member
Thus the surprise and posting! This is not my first job on a vessel this big but the first to use AV baluns, which cranked up the CAT5 by 5x. The boat is 230 feet long and 50ish feet tall.
The linked vessel is NOT the vessel, but it IS similar in size.
http://www.moranyachts.com/Catalog/Yacht/?ID=19
If it were near-owner value/result then they would be budgeting an absurd amount for it.
e.g. a barbecue grill that will make people go 'ooo and ahhh'. Spare no expense for that, gold plating, whatever.
But networking infrastructure nobody sees or will be impressed by, so yeah, rich folk will want to go as stingy and cheap as they can get away with.
ViviTheMage
Lifer
That is pretty sweet, you should document/photo the build.
bobdole369
Diamond Member
This. Thus the unobtanium-version 70" LED backlit screen for the owners cabin.
Not too sure about confidentiality, but I'm sure I can and will document when we build most of the rack in-house.
7 miles of cable are strictly for entertainment and the yachts monitoring system so instrumentation.
Security system is its own deal, surprisingly only 16 cams.
bob4432
Lifer
interesting all done through cat6. are the items that do the monitoring ip type setups like ip cameras or is it just a way to get a lot of cable (4pair) to the desired locations? any info you can shed on this? is it like home automation on a much higher $$ scale (well, guess it depends on the home 😀)