Harry; I switched out my Ray Jeff 513 and used the existing transducer. Replaced it with a Standard DS 30. The plug used by the Ray Jeff IS NOT an RCA plug. It only looks like one. The center contact is smaller. A good quality RCA plug, soldering iron, and lots of patience and all will work out fine. powell... M/S Fletcher James NAS Pensacola FL -----Original Message----- From: Harry Sodeman To: trawler-world list Date: Thursday, 16 July, 1998 17:38 Subject: old style flasher/sounder >Hi listers.....How is the best way to upgrade from the old style >flasher/sounder to a modern fishfinder/sounder? Here are some of the >physical conditions that effect how to best proceed..... > > 1. the current non working unit is a Ray Jefferson 513 > 2. this unit has a 200khz thru hull transducer with a RCA type jack > 3. the boat has a ballasted hull...this is important because i'm not >sure you > can use a glue on inside hull transducer with a ballasted hull? > 4. the boat has a full displacement hull, single screw, horseshoe >shaped > stern with no flat surface or right angles... > > Has anyone tryed to use the existing transducer and just mount a >new unit that will accept the RCA jack? or who has any other >suggestions....thanks very much in advance..... > > Harry "Kalena" > > > p.s. The new fishfinders have a different connection from the >transducer...I guess to show the graphics or ??????? >

Subject: Re: Trawler Range -- Beebe Curve Sent: 7/15/98 4:47 PM To: TrawlerWorld Email List, trawler-world-list@samurai.com Cap'n Wil, >The difficult things about the Beebe curve is calculating F1 and >F2. The following are from Michael Kasten and Charles Vollum. > > F1 = Long Tons ^(7/6) > F2 = 47.67^S/L / 77.28 > >Where S/L = Knots / LWL^0.5 Thanks for the excellent post on Defining Trawler Range. I look forward to seeing similarly complete data from others. Michael Kasten

Hi everybody - my name is John Marino and I am a new subscriber and also in the market for a trawler after selling our sailboat. Since we favor the sundeck models we have seen alot of boats that we like that have "modified-v" hulls. I would really appreciate any suggestions/input from any of you as to whether we should even consider these. We are very concerned with the performance/off shore capabiliities/deficiencies/etc. We will be using the boat mainly in the Gulf of Mexico. Thanks for your comments!

This is a multi-part message in MIME format. ------=_NextPart_000_004D_01BDBA63.B3CB0F80 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable This is an idea that some of y'all on the list may like to discuss. Me = thinks it may work... Why not use a electric motor coupled to the drive shaft for a 'get home' = drive system? In the smaller trawlers, like my own, we have smaller = gen-sets that do not allow for hyd. pumps and the like but, they produce = electricity. Another advantage that I could see with this setup is that = when under weigh on the main engine, the electric motor would be driven = by the turning prop shaft and be able to produce electricity to run the = A/C and other things w/o running the gen-set. This system would not need = to be overly expensive ( usually common problem for us smaller trawler = owners) and short of fabricating the mounting bracket, a fairly simple = install. What do you think? Morley MV Tortuga 35' Tia Chaio ------=_NextPart_000_004D_01BDBA63.B3CB0F80 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ------=_NextPart_000_004D_01BDBA63.B3CB0F80--

From: N. Kluznick Krogen 39-006 Palo Alto, Cal. Sea Horse 650-326-9763 N.Kluznick@phc.net Paul, I enjoyed your note about your observations and expectations for the K39. I would just like to say that the underwater hull at the transom is not all that flat. > ......You are dragging a small amount of flat transom below the water line. It...... > > .....As you said earlier, you to have a "wine glass" tail, but it is a rather fat > wine glass. The features of a semi-displacement boat are not very.......... As viewed from the stern, it has a about a 3:1 slope, or about an 18 degree rise. Just thought you would like to know. I'm sure Mike would have told you himself but he has been mighty busy these days getting his new boat ready for sea trials. Cheers, Nicholas

DolphM@aol.com wrote: > > Peggy, > We have an auto halon system in the engine room and it is serviced regularly. > It doesn't have an automatic engine shut down feature. It's the engines & gensets themselves, not the extinguishing system, that should have an automatic shut down, and an alarm that goes off on the helm, if/when they do. The temperature is below combustion temperature...so the halon system won't go off. That feature is meant to save an engine as much as it is to prevent fires...for instance, it'll shut down an engine if a water intake impeller fails. If your engines/genset don't have that feature, it's been disabled at some point...'cuz it's a required safety feature, and needs to be restored. Btw...in deciding where to put fire extinguishers throughout a boat, always think in terms of having one between a place where fire is likely to start and an escape hatch from the boat...it should never be necessary to go through a fire to get to an extinguisher or get out. That usually means a few more fire extinguishers than CG regs call for...which certainly doesn't hurt--nor does it hurt to have a fire drill to make sure you--and the kids and pets--know how to get out quickly from any location in the boat. And it's always a good idea to put valuables--watches, wallets, keys etc--together in a bag or box that can be grabbed easily if you're ever--God forbid!--ever awakened and have to get out quick. > The only way I would > know if it went off is if I notice the pop or I notice that the little led has > gone out. The smoke detector I can hear and see easily. Should it go off I > would shut down the engine and or gen set immediately and investigate. Once a fire has started in a closed compartment, it can be dangerous to open that compartment, 'cuz opening it can provide the additional oxygen that a smoldering fire needs to explode (almost literally) into full blaze. Experts advise against ever opening a hatch that's more than just warm or one that has smoke curling out from the edges. That's why automatic extinguishing systems are so important in engine rooms...and if halon is inappropriate, there are other chemicals that effectively smother fires. Peggie > Diesels > are quite happy burning halon and will quickly suck it out of the engine room > if left running. The fire can then re flash. > In addition I have detectors in every other place that I thought a fire might > start. I can hear the alarms quite well in the stateroom at anchor. If we are > running there is always someone on watch in the pilot house. I want to know > about any conflagration well before there is enough smoke in my stateroom to > cause a smoke detector in that area to go off. We have hand held extinguishers > through out the boat and we know how to use them, if given the chance. > Hope this answers your questions. > Dolph > M/V The Right Whale

I had a similar windlass problem and got excellent technical support from Imtra. I sent them photos of my windlass and they found parts that would upgrade it at a very reasonable price. Contact Ted Farnham at Imtra. (I'm not sure he is still there.) Even if it is not a Lofrans he can probably help. Imtra Corporation 30 Barnet Blvd. New Bedford, MA 02745 Phone: 508-995-7000 Fax: 508-998-5359 Bill English "WOODSTAR" Sausalito, CA

-----Original Message----- From: nick morgan To: trawler-world-list@samurai.com Date: Saturday, August 08, 1998 9:50 PM Subject: Re: Man Overboard >Hi All, >For anyone who hasn't read it, Please read the story in the Summer '98 issue >of Passagemaker, titled "The Bucket". It is a first hand account of an >experienced boater making a mistake analogous to going overboard. My wife read that story and promply made my show her how to start and run the dink. Been trying to get her to do that for years! Morley 35 Tia Chiao

Hi, After synchronization to the GPS time, the USRP time does not match the real GPS time (there is 1 second offset between the USRP time and the real GPS time). I realized that 1 second offset by analyzing the signal content produced by the USRP (which depends on the GPS time in my case). Here the system configuration: CentOs 7.2 UHD 3.9.6 USRP X300/X310 GCC 5.4 I also tried to run the application (with the exact same source code) on a Windows based system. And there were no mismatch between the USRP time and the real GPS time (the signal produced by the USRP was perfectly sync with the GPS time). Here the Windows based configuration: Windows 7 Enterprise UHD 3.9.4 USRP X300/X310 MSVC 2013 To synchronize the USRP time with the GPS time I used the code snippet from the X300/X310 documentation, see below: =============================================================================== while(! (usrp->get_mboard_sensor("gps_locked",0).to_bool()) ) { boost::this_thread::sleep(boost::posix_time::seconds(2)); } usrp->set_time_source("gpsdo"); uhd::time_spec_t last = usrp->get_time_last_pps(); uhd::time_spec_t next = usrp->get_time_last_pps(); while(next == last) { boost::this_thread::sleep(boost::posix_time::seconds(0.05)); last = next; next = usrp->get_time_last_pps(); } boost::this_thread::sleep(boost::posix_time::seconds(0.2)); usrp->set_time_next_pps(uhd::time_spec_t(usrp->get_mboard_sensor("gps_time").to_int()+1)); =============================================================================== I was able to fix the issue by adding 1 second to the time when calling set_time_next_pps, as follow: =============================================================================== usrp->set_time_next_pps(uhd::time_spec_t(usrp->get_mboard_sensor("gps_time").to_int()+2)); =============================================================================== However I would like to understand why that additional second is needed (only on CentOs) and get rid of it in order to keep the CentOs source code and the Windows source code the same.

THAT was the time is the best comment >----Messaggio originale---- >Da: "Will Kimber" >Data: 17/06/2017 4.22 >A: >Ogg: Re: [time-nuts] The clocks at Windsor Castle, UK > >And when those clocks were made there was no thought that in few >centuries time a system that decrees that the time be put forward and >back would be invented. They ran continuously and THAT was the time! > >Will > >On 06/17/2017 01:05 PM, William H. Fite wrote: >> The clocks at Windsor range from C14 wooden-geared pieces to French >> masterpieces of haute horlogerie with multiple complications including >> perpetual calendars, sidereal time, equation of time, true local solar >> time, date of Easter, various star charts and astronomical data, orreries, >> animated figures and other automata. The more exotic and delicate of these >> are not run continually but are started up periodically to test their >> operation and when the Royals wish to demonstrate them to guests. >>