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Ask Slashdot: What Tech For a Sailing Ship?

Razgorov Prikazka writes "There is a lot of technology involved in sailing these days. EPIRB, FHV-DSC, GPS, NAVTEX, Inmarsat, fishfinders/depth sounders, different kinds of radar (with MARPA or ATA) — you name it and there are dozens of manufacturers out there willing to provide, all of them with a range of different products. Right now I am planning a 'round-the-world-trip,'' and my ship (an 18-meter Skerry Cruiser sailing yacht) is in its early construction phase, so I need to shop for some hi-tech gear and, basically, I got lost in all the possibilities. What kind of hardware would you recommend as necessary for a trip of this kind? What would you have installed in your ship in order to have a safe trip?"

27 of 340 comments (clear)

  1. Easy by Sparticus789 · · Score: 4, Funny

    Satellite internet, so you can read /. in the middle of the Pacific Ocean.

    --
    sudo make me a sandwich
    1. Re:Easy by Joce640k · · Score: 4, Interesting

      Read "Confessions of a Long-Distance Sailor" before you go.

      http://arachnoid.com/sailbook/index.html

      --
      No sig today...
  2. Compass and sextant by Anonymous Coward · · Score: 5, Insightful

    A compass and a sextant. Seriously, learn the basics first.

    1. Re:Compass and sextant by BoRegardless · · Score: 5, Informative

      What would you install for a safe trip around the world? Electronics won't give you safe seafaring or your sanity. Can't count the number of times in good weather when one or more pieces of nav gear was MIA.

      Sextant and compass are fine but you need a couple mechanical chronometer watches at a minimum. Then comes the charting and math when you have to do the navigation by dead reckoning. The first time you take a lightning strike or a knockdown or rollover and all the electronics goes, the non-electronic equipment will be gold. Yup, I've heard the guarantees about "our grounding is guaranteed to work", but guarantees in the middle of the ocean are worthless. Radios in a water tight aluminum box with batteries as a backup. Typical abandon ship gear.

      Enough experienced sailors as crew to maintain a wide awake watch at all times. A container ship at 25 knots can be invisible now but on your beam in 20 minutes. The other thing which can sneak up, though it is rare is a nearly submerged but still floating metal cargo container that you can barely see. Some small yachts do disappear each year without a trace.

      Traveling without experienced sailors can be exhausting, all the way from "when are we going to get there" to people who become paranoid a week out on the way across the ocean, to those who don't want to share in the inevitable cleaning and fixing and night watches. Then some will just bail out after the first 6 week crossing and you have to "pick up" more crew, which has its own problems.

      Common sea sense enough from experience to think ahead and avoid sailing into a bind, whether pirates, political, weather, lee shore or a bad anchorage... That might include a professional skipper for the first third of the voyage...and a pile of cash. Accidents happen and parts and repairs are expensive.

      Anti-pirate gear? Best is a course to avoid those areas. Thieves in the night in major harbors is a different and all too common story. Slocum used the lowly thumb tacks on the deck near the rails to grab the attention of boarders in the middle of the night. Lots of stories are swapped amongst sailors in every port.

      No easy answer. Everyone is different in attitude and ability. Boy scout motto applies at all times.

  3. EPIRB by etnoy · · Score: 5, Interesting

    Get an EPIRB. If the ship collides with a floating container and sinks quickly you will have no time to manually send a distress signal before abandoning ship. A free-floating EPIRB will automatically engage in case of sinking and with its encoded distress signal you will get aid within hours. For communications on the oceans I recommend getting a good shortwave radio with a decent grounding and antenna that can communicate further than any VHF-based system. Source: I helped build and design a Swedish 131' sailing yacht.

    --
    Quantum hacker.
    1. Re:EPIRB by ColdWetDog · · Score: 5, Funny

      I'll bite. How the blazes does one achieve an (electrical) "decent ground" with a (buoyantly) floating chassis?

      A wire to the biggest conductor on the planet. The ocean.

      --
      Faster! Faster! Faster would be better!
    2. Re:EPIRB by Anonymous Coward · · Score: 5, Interesting

      When we run off-shore we have two EPIRBs and a Spot. One ship EPIRB, on personal EPIRB that is always in a zipped pocket on your person when out of the cabin, and a Spot unit for status reports to friends/family.

      Nav instruments are Seatalk/Raymarine (Depth, forward scanning depth, wind, GPS, plotter at helm) with one redundant Garmin plotting GPS at nav station and a handheld Garmin GPS. Fixed VHF with controls at the helm and nav station and a separate handheld VHF, one fixed HF radio with antenna running up the main mast rigging. Finally the boat doesn't go anywhere without the integrated RADAR and AIS systems working with the display at the helm. Lots of freighters and cruise ships barreling around in the fog.

      And most importantly a mast mounted wi-fi range extender for reaching any hotspots on shore while anchored near a town.

    3. Re:EPIRB by tilante · · Score: 4, Informative

      An "electrical ground" is simply a large reservoir of neutral charge -- large enough that sending our stray voltage into it won't significantly raise it's own potential. On land, a wire is sunk into the earth (i.e., into the ground, which is why it's called a "ground") for this purpose.

      On a ship, ground wires are simply tied into a metal part of the ship that will have constant contact with the water -- thus, the body of water the ship is in is used as that reservoir of neutral charge. (Of course, that body of water is most likely in contact with the earth, which can further absorb the stray electrons.) To get a "decent ground", you want a large enough surface of metal in touch with the water, and want the wiring system tied to that metal body to be able to handle the charges involved should something short to ground.

    4. Re:EPIRB by Sailor+UK · · Score: 4, Insightful

      I have an 18M sailing yacht that we fitted new electronics on 3 years ago. I would agree with some of the other posts that if you don't know this through your experience then it may be unwise to undertake such a major trip. However if you want my advice (and 25,000 miles sailed) - 1. Think about power consumption - all the kit in the world is no use unless you can power it for extended periods - are you planning on a genset? 2. Get a popular brand that spares can easily be sourced anywhere world wide (Raymarine good in that respect) 3. Radar is essential and this sound be linked into your chart plotter ideally with AIS integrated too. 4. An EPIRB is 100% essential. A full Inmarsat/Sat comms setup will be expensive (not just to instal but to run - I know we have one). A hand held sat phone will be more cost effective. 5. You can get some great low cost plotters for iPhone and iPad - the Navionics one would make an excellent low cost backup 6. We have high performance mask mounted Wi-Fi but to be honest in Europe at least 3G is great and low cost Good luck

  4. 18m is too big by Hadlock · · Score: 4, Informative

    Quoth the Seraffyn, "go now and go small" - Lin and Larry Pardey
     
    18m (52') is hugely way too enormous for less than five people. I would seriously consider a 42' boat at the high end. At some point you're going to be tasked with reefing the main by yourself in 30kts of wind and trusting that your systems are working correctly. I've reefed the main with four other people on a 46' boat in 25 kts of wind and even with a fancy expensive duch reefing system, it's still not a walk in the park.
     
    That said, Garmin (of course) makes a wide variety of systems, as do quite a few others. I'm curious to see if anyone with real experience chimes in here, but while you can get by navigating along the coast with an iPad or Android phone (we do this in our boat), that's not a system you want to rely on for years on end in a marine environment.

    --
    moox. for a new generation.
  5. Wrong audience for the question by bakuun · · Score: 4, Insightful

    While I'm sure there are some here that are into sailing, this question should really be placed at a sailing forum instead. There are plenty of those - I'd suggest that you become a member there, and ask the question there instead. It also seems to me that a round-the-world trip may be a bit ambitious if you don't even know about the gear (or have tested the boat) yet. Something more limited may be suitable initially.

  6. Re:Seriously? by Hadlock · · Score: 5, Informative

    With the advent of cheap touchscreen devices in the last six years, Garmin and their like have really had to reinvent the wheel. Mapping technology is lightyears ahead of where it was even 15 years ago, Navionics is to the point where you can mark new obstructions on your map, and then upload them to the web for other people, and many are eventually included in newer additions. Digital maps and charts are no longer X months out of date when you buy them, they're X hours since your last synch.
     
    That said, as of two years ago you couldn't buy a whole system (engine/nav/radar/battery/depth sounder etc) that used Cat-5 for less than $15,000. Now they're getting to be under the $8,000 range, and even offer a non-proprietary VGA out for your Nav station. You can get 12" primary waterproof displays with decent resolutions for under $1200 now.
     
    There's been a huge turnover in the industry with the advent of cheap GPS enabled electronics (Smartphones) and the industry is scrambling to catch up, with prices finally falling. You can buy a 4" B&W chart plotter for $172-199 online these days, medium resolution US costal & lakes charts included.
     
    Go check out what Garmin had for marine GPS 12 years ago. Big squishy backlit numpads with B&W LCD displays that made a TI-83 look high tech. There are major changes happening in Marine technology these days. You can pick up low end radar equipment new for $1000 these days. That used to be $10,000 ten, fifteen years ago.

    --
    moox. for a new generation.
  7. Wrong place to ask. by Shoten · · Score: 4, Insightful

    Razgorov,

    I'm a sailor myself, having done a lot of time on the Atlantic up near New England, and having had my share of surprises out there. And I can tell you this: Slashdot is not where you should get your advice. I'm seeing things like "Satellite internet, so you can read /. in the middle of the Pacific Ocean," listed under "Easy." Really? REALLY? You're asking about gear which will help you do one of a few things: 1, find your way so that you reach land on the other side instead of going off into the wild blue yonder, 2, keep your boat operating so that you can continue to direct your own fate, and 3, not sink and/or die. And you're getting answers like that.

    There are communities of sailors who have actually done long-distance sailing. Speak with them. The question is not about the tech, it's about the problems you're likely to encounter, and what to expect. The choices you make will literally affect your chances of survival; you really want to have one-on-one discussions with people to get a sense of what you need to know, to make your own decisions. Circumnavigation is no joke, even in an 18-meter yacht. You're going to have disasters. Speak to some people who have actually had to deal with those disasters, not a population that is full of people who think this is some kind of cool game.

    --

    For your security, this post has been encrypted with ROT-13, twice.
  8. Re:Seriously? by kgibbsvt · · Score: 4, Informative

    Spot on! Dump a couple of million into a boat and you don't know what kind of gear to buy? Worse, you come to Slashdot to find out? Head over to Sailing Anarchy. They'll tell you what to buy (and provide an earful to boot).

    - kg

  9. Firearms by sycodon · · Score: 4, Informative

    Several well concealed, yet accessible firearms. Pistols as well as some kind of AR. The ocean's a big place and there ain't any 911.

    That said, be sure you read up on the firearms rules for every place you might find yourself. If they don't want you to be able to protect yourself, you don't want to go there.

    --
    When Fascism comes to America, it will call itself Anti-Fascism, and tell you to give up your guns.
    1. Re:Firearms by TheDarkMaster · · Score: 4, Insightful

      Exact. In international waters no country have official police power, so if pirates appear you're alone. Be ready to this.

      --
      Religion: The greatest weapon of mass destruction of all time
    2. Re:Firearms by Inda · · Score: 5, Funny

      In no particular order, I'd choose:

      A 12-gauge auto-loader.
      A phased plasma rifle in the 40-watt range
      An Uzi nine millimetre.

      --
      This post contains benzene, nitrosamines, formaldehyde and hydrogen cyanide.
    3. Re:Firearms by houghi · · Score: 4, Informative

      Even more important is that you must be absolutely willing AND able to use them, otherwise they WILL be used against you and you would have better of without them.
      I am not talking about you telling others that you would use them. I am talking about you knowing in your hart that there never will be any doubt that you will use them without hesitation.

      And I wish that more people would follow your rule concerning firearms: " If they don't want you to be able to protect yourself, you don't want to go there.". Looking at firearms laws here, it would keep all those loud American tourists away from doing their "Europe in 10 days" trip. ;-)

      --
      Don't fight for your country, if your country does not fight for you.
    4. Re:Firearms by Anonymous Coward · · Score: 4, Insightful

      This is from a former cow-orker who sailed a lot around the Gulf waters:

      First, get a concealed weapons permit in the state your port is in. That way, that is one less place that has an excuse to impound and get a free ship.

      Second, you want multiple firearms. A long range one so you can say "hi" before the attacker's AKs become useful, and a semi-auto rifle. For close range, a .40 (best balance between oomph and number of rounds in a magazine) and a 12 gauge. Some well placed holes right at the waterline will usually make an unarmored ship decide to find an easier target. It is always good to have a few well stashed hiding places just in case for additional munitions.

      Third, if the ship is big enough, there are electric fences you can have installed. Yes, they are defeatable, but any barrier is better than none. Just make sure to switch it off and extend the ladder before taking a swan dive into the tropical ocean.

      Don't forget -- you can get boarded by navies. One can be in the high seas, and have the Cuban navy decide to board your ship just because might makes right, and it doesn't matter where you are, they can say the vessel was not in international waters. Dead mean tell no tales.

      PS: Don't use slashdot for marine references. It doesn't take much to die a painful death with absolutely ZERO hope of rescue on the high seas. I'd find some people, be it retired salts, a yacht club, or the guys at the marine shop to actually give you facts and not bullshit.

      You pay out the nose for marine-grade components. Get marine-grade advice, and that doesn't mean reading some anonymous coward's response. Learn from people who know their stuff.

    5. Re:Firearms by heypete · · Score: 4, Informative

      "AR" generally means "a rifle based on the Armalite Rifle (e.g. AR-15, M-16, etc.) pattern", and not "Assault Rifle".

    6. Re:Firearms by waimate · · Score: 5, Insightful

      "If anybody approaches you in open water, he's not your friend."

      Either that, or he needs help, or he's approaching to warn you of some hazard, or offer you some fish, or just to be friendly. Yeah, you go ahead and pull your gun. Or better still, just stay home.

    7. Re:Firearms by chihowa · · Score: 4, Insightful

      "If anybody approaches you in open water, he's not your friend."

      Either that, or he needs help, or he's approaching to warn you of some hazard, or offer you some fish, or just to be friendly. Yeah, you go ahead and pull your gun. Or better still, just stay home.

      There are ways to indicate all of those situations without actually approaching another boat. And you need to be able to deny their approach. It's not friendly to approach another boat in the middle of the ocean without a discussion first. It's important to know the actual customs and not just make assumptions based on unrelated knowledge.

      --
      If you want a vision of the future, imagine a youtube comments section scrolling - forever.
    8. Re:Firearms by cbhacking · · Score: 5, Informative

      Personal history (3.5 years of blue-water cruising, 12K+ sea miles) suggests you're safer without one anyhow. The people we heard of getting shot were either the ones who pulled a gun on their boarders, or who had a guun on board when the boarders snuck on at night (the boarders found the gun, shot the owner, and left).

      "Pirates" in the usual sense aren't really the problem. The much bigger problem is people sneaking onto your boat while you're either away or asleep, and stealing things. They aren't always armed, but if they are, going for your own gun probably won't help, and if they aren't, they may find your gun before you can get to it.

      Incidentally, dinghies are the first to go; use a steel cable or chain and haul the dingy out of the water at night. Make sure the outboard is *very* well secured, as well; a strong and high-quality stainless steel padlock works well, but remember that a hacksaw can get through that too. Unlike pirates, which can generally be avoided just by having some caution rgarding what parts of the world you sail, boarders are more-or-less a risk everywhere; consider investing in a simple motion sensor alarm for the rougher areas.

      Oh, for anybody who is curious, my family's website: http://svocelot.com/ . Check out the section devoted to the boat gear in particular (for relevance to this Ask Slashdot).

      --
      There's no place I could be, since I've found Serenity...
  10. Right crowd? by nairnr · · Score: 4, Funny

    You want to ask a bunch of people who live in their mother's basement what you need to sail around the world? Good luck with that.

  11. Re:Seriously? by Hadlock · · Score: 4, Informative

    Cat-5 has the advantage of being able to replace parts anywhere in the world, and not having the Gold Plated Marine Use Tax attached to it, as well as working with your existing network.

    --
    moox. for a new generation.
  12. Wow, that's a difficult question by PhinMak · · Score: 5, Informative

    Some credentials: My folks own and operate a boatyard. We built a 64'8" (20m) Alden staysail schooner in the early 2000's called the Lion's Whelp. This boat was to be used by the family as an blue water cruiser. Many trips to the carib via Bermuda and along the Maine coast, but nothing across the Atlantic yet. Also used as a design tour-de-force displaying our company's know how. We won the Concours D'Elegance at the Antigua Classic yacht Regatta our first year there, a 2nd place the next year. The boat hasn't been back in subsequent years.

    Full build history plus many, many photographs and discussion can be found on the yard website: http://portlandyacht.com/lionswhelp

    Some of the systems we have onboard include: Reverse osmosis watermaker, EPIRB, GPS, IBM Blade server, AC, diesel heater, diesel generator, deep cycle batteries, LCD movie projector, Stereo/DVD/CD/MP3/iPod, main engine direct powered 3000 gallon per minute bilge pump, RADAR "pinger" (makes us look bigger to cargo ships), Sauna (yes, a sauna), full wind instruments, satellite modem, satellite weather station, universal shore power inverters (europe,japan is 50hz, etc), autopilot, VHF, shortwave radio, cell service repeater, wifi, etc, etc, etc.

    If you read through our site you will note that we deliberately overbuilt the boat because the owner is the builder is the captain and any disaster onboard would kill his family. Stays and shrouds are each strong enough to hold up the entire 42 ton boat. Anything that could save lives was installed on the boat. As a consequence, the boat was 3000 pounds over the original design weight. Doesn't really matter because it's a cruiser not a racer. Righting arm would still right the boat at 178 degrees (almost upside down), while most modern fin keel boats won't right at 120 degrees.

    After years of being onboard we've realized that there needs to been a dedicated systems expert onboard at all times if you expect to have every piece of the systems up and running at all times.

    Not sure where you're building your Skerry, but we'd be happy to discuss your needs and right-sizing your equipment needs without overloading your day-to-day maintenance. (or today's budget) If you're in Portland Maine you could come by the yard and see the boat now for a full tour and more discussion.

    207-774-1067 - Owner Phin is on site and wife Joanna is in the office answering phones.

  13. Re:Seriously? by drooling-dog · · Score: 5, Funny

    Well, (s)he did come here, so we might as well help out. Here's what I know about nautical gear:

    You'll need a hatch and something to batten it down with, a jib with a good cut, some timbers to shivver, and a mainsail that sets attractively. Other than that, you're on your own, matie. Arrrrgh!