Marine Equipment & Supplies
Here are the companies and businesses listed under the Marine Equipment & Supplies category.
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DOCKGUARD ENGINEERING LTD
If you need to contact us between the dates above please send an email to sales@dockguard.com and we will get back to you. High Speed Catamaran Ber...
www.dockguard.comSKINNER MARINE SERVICES
Skinner Marine Services are Specialist Suppliers to all sectors of the Marine Industry, with over 50 years experience in the field. We are exclusiv...
www.skinnermarine.comPETERSEN STAINLESS RIGGING LTD
W: www.hi-mod.co.uk. Strucural Wire Systems. Adjuster Cable Forks. Swage Fork & Turnbuckle ... PH Industrial Lifting Shackles - Bow Type. E...
www.petersen-stainless.co.ukF P M HENDERSON
Specialists in mooring systems and aids to navigation, offering supply, installation and design of moorings and aids to navigation.
www.fpmhenderson.co.ukSPENCER CARTER LTD
Spencer Carter Limited has gained an enviable reputation for the design and manufacture of winches and fishing equipment since their formation in 1...
www.spencercarter.comSPERRY MARINE SYSTEMS B V
Sperry Marine/Northrop Grumman - the single source for advanced commercial and military maritime products.
www.sperry-marine.comSPENCER RIGGING LTD
Welcome to Spencer Rigging
www.spencerrigging.co.ukSPINLOCK LTD
Rope handling and professional deck hardware solutions for all sizes of racing and cruising yachts.
www.spinlock.co.ukLALIZAS MARINE (UK) LTD
Lalizas Manufacturer of Marine Accessories and Safety Equipment immersion suits, lifejackets, safety harnesses, inflatable boats, hatches, control ...
www.lalizas.comSIMRAD LTD
Worldwide manufacturer of marine electronics for use on yachts, fishing boats, and coastal vessels.
www.simrad.comBOW & STERN
Fork lift hire in North West Scotland, Isle of Skye and Lochalsh. Forklifts for construction, access and boat lifts. With driver, Self Drive or Age...
www.bow-and-stern.co.ukLocal Marine Equipment & Supplies
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Need help finding a company or supplier?
Where on Oahu can I rent a DC power supply with an output of 24 Volt @ around 10-20 amp?
Or buy if I have to
Michael
Question answered by Mike
I don't know about rental shops in Oahu - maybe try the yellow pages for test equipment rental. But if you don't need a super well regulated supply then how about a couple of 12 V car batteries in series. You can get WAY more than 10 or 20 amps from them. How long does it have to run for - car batteries are typically god for maybe 25 Amp-hours - more from the deep cycle marine ones.Different specs for deep cycle marine batteries?
I have observed that deep cycle battery capacity/performance characteristics are defined by 3 numbers. The definitions for the first 2 are the same for all deep cycle batteries I've seen: 1. Marine cranking amps at 32 degrees F 2. Cold cranking amps But for some of them, the third number is "Amp/hours", and for others it is "Reserve capacity." I totally get what cranking amps and amp/hours are. I recently put together two off-grid solar powered comunications towers, and I have to maintain a third one that was already here. But what is "reserve capacity"? Amp/hours translates directly into how long the equipment will run on battery power without power from the solar panel. Can "reserve capacity" be converted to A/h? In other words, is it just an alternate way to express the same characteristic? Or does indicate different battery construction, and/or different design goals tailored for different usage scenarios? TIA Derrick, So it does convert directly into A/h, 2.5 hrs * 25 amps = 62.5 A/h. Cool man, thanks!
Random Malefactor
Question answered by jtexas
yes, 2.5 hrs * 25 amps = 62.5 AH but...the faster you discharge a battery, the fewer amp hours it can supply before it is completely discharged. other words, if the spec says "100 amp hours", that means the battery is designed to supply 5 amps for 20 hours...but you can be sure that it won't supply 20 amps for 5 hours -- it'll be closer to 3 maybe 3 1/2. (google "peukert effect") also, "completely discharged" means 10.5 volts...but most battery-powered equipment will cease to function before it gets that low. depending of course on what it's running...most stuff, when you get to around 50% state of discharge, it's functionally dead. btw, MCA as I understand it, is cranking amps at 32ºFSpeaker building help?
Over the summer, I plan on purchasing a speaker building kit, or purchasing parts for a speaker. I'm building my own speaker, let's leave it at that. I want these speakers for tailgating next football season. I'm going to set them in the trunk of my suv and supply power from either a generator or a nearby power source. I probably will be using my lap top as the audio source, so I'll need to buy some connection converters as well. I might just buy a cheap mixing board too, I'm not really sure. What I'd like to build is a speaker that has good audio output quality, a moderate amount of power (though the louder it can get, the better), and have it not cost too much money (I'm a college student, money is tight). Now obviously, these speakers would need to be semi-portable, but I'm a strong guy and I have a lot of cargo space in my SUV, so transporting them shouldn't be too much of a problem. I'm probably going to build 2 speakers, but I'm considering building a sub-woofer as well. I've never built speakers before, and I don't really know where to start. Any tips? Should I buy a kit, or buy parts? Links would be helpful.
Karl
Question answered by Lance
Check out this kit see if it meets your needs....you'll also would need am amp or receiver you might just want to stick with marine or car stereo equipment that's 12 volt that would make it easier to run off the truck or car.....you could build a whole car stereo in one box with handle's and padding so it doesn't scratch anything... that runs a plug into a trailer hook up or something similar...Changes In Sales Tactics?
Short to say, I was big time in the car audio scene before the kids, lol. At the time there were alot of brand names that would drastically over-rate their performance capabilities, but nothing like I've seen these days. Are they using a new sales tactic or something, I mean I literally saw a 5k watt amplifier for under $200, lol. When I was bumpin' back in the day I was running an equivelant hybrid of JL audio's HD lineup, but I was pushing only two eclipse amps & two clarions, in dash time alignment, deep cycle marine secondary, circuit breakers, aftermarket performance alternator etc. I was pushing at one point 147dB at the dash, and it was crystal clear beautiful sound. Todays hardcore guys claim their pushing an enourmous amount of power out of a stock alternator & a walmart battery. Now, I recall manufacturers used to get away with doubling the RMS of their equipment by calling it peak, which ultimately means that the power supply can handle a lighting fast surge of double the RMS, now it's completely off the charts with 3k & 5k watt amps, and they don't bother to show specs either, how they get away with this? am i missing something here?
Confucious Say
Question answered by Franklin
Your right companies really oversell themselves. Typically if the company is an american company they power they give is true or below what the amp says. Often times companies like Kicker and MTX their 750 watt model amp you would buy it and look at the amps birth certificate to find it has been tested at 900 watts. the companies that oversell themselves are lab amps, meaning the company claims that one time they got this amp to peak power and it shot out this outrageous amount of watts. Its not considered lying or at least they arent pursued for doing it due to everyone does it Sony Kenwood Power acoustic and they rate these in labs and no one uses the same standardized testing to give true results. You always get what you pay for in car audio as I am sure you learned when doing spl. I also did spl and quality is pricey
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