Re: [bolger] Re: MICRO TRAWLER
- Yes,Mrs.Altenburger,you right for current estimation at Bosphore.I remember my childhood.We are going our relatives,living at Bosphoreand there is one place.Current is more than 8 knots.So max.speed of Bosphour ship was 8 knots then and ship was passing from the otherside of it,which current speed was less there.Those were the days.Yes,Naval traffic is heavy during the day.But I would like to inform you one thing.If I follow the seaside of Bosphore with a powerfull engine,there will be no problem.In one place,width is 600 meters.This area is a little bit dangerous.That's all.Other places of Bosphore is wide and no problem.There are many small fishing boats,with low power,fishing there.If the boat documents are full,there will be no problem,during official control.Bcs,there is no strict rule there.According to Int.Treaty,this area is called free passing area.For big ships,especially Tankers,it is asked to take offical people forpassing this area safely.It is narrow.That's all.Nezih----- Original Message -----From: philbolger@...Sent: Sunday, November 11, 2012 10:01 PMSubject: Re: [bolger] Re: MICRO TRAWLERLooking at the Bosporus right through Istanbul we'd find 8+kts of current. And the Sea of Marmara seems large enough to likely suggest keeping relative seaworthiness in mind. Very interesting, historic waters, full of large-ship commercial and naval traffic connecting the two large seas, with lots of ferries and working-craft running every which way and thus rich in opportunities for adventure and of course challenges. Hard to resist.
But should the tax-man dictate the geometry of an easily-built low-power boat to be part of this large and fast-paced traffic-pattern ?
Balancing priorities... ?!
Susanne Altenburger, PB&F----- Original Message -----From: philbolger@...Sent: Sunday, November 11, 2012 2:28 PMSubject: Re: [bolger] Re: MICRO TRAWLERNezih,I once had the chance to visit Istanbul for just a few days and never forgot it, including a Sight-Seeing tour around the Golden Horn. Very intense and distinct experience of indeed 'Orient' meeting 'Occident' in this old and important city.
How much does the annual tax on boats above the 5m mark really cost you ?
MICROTRAWLER is designed for planing with at least light outboard 50HP - versus either much heavier inboard diesel-power for the same speed or no speed at the same weight incl. gearbox, prop, rudder etc. I do not recollect the current through the Marmara Strait but the Black and Mediterranean connect there with likely things getting 'lively on occasion, if not every 6.3hrs. So you'd need light-weight/OB speed ?
Do they tax the boat-hull on the trailer ?
Is it trailer-/marina-length or overall length running ?
And could you have a folding bow to make her longer once she is in the water.
Accepting the extra 1m of length in taxes, a simple powersharpie of say 20-feet and 5-6 feet of width with a 10hp outboard might still be cheaper overall than a short wide horsepower-hungry hull that has no seriously useable cabin - even to just take a nap - but saves some money on taxes. Such a hull will not weigh more than a short wide dense MT. And that hull would look as good/'cute' as MT.... But not quite as easy to park - unless we fold the bow up when she is on the trailer...
Options, calculations, decision...Susanne Altenburger, Phil Bolger & Friends
----- Original Message -----From: nezihSent: Sunday, November 11, 2012 12:35 PMSubject: [bolger] Re: MICRO TRAWLERThanks for your diesel engine confirmation.Bcs they are safe and cheap fuel facility and long run,even in hot weather.I am from Turkey,Istanbul and climate is stable,except 1 or 2 weeks stromy weather.During the summer time,temparatureis approximately 28-35 celsius degree and we do not have big storms like USA.There is one inland sea(sea of Marmara)and MT is quite suitable.Off course,Bosphourus is a narrow strait(lenght 15 kilometers,width 600-800 meters).Kindly inform you that,your below comments has been dully noted.I will take care of them.Nezih----- Original Message -----From: michaelnotiganSent: Sunday, November 11, 2012 6:33 PMSubject: [bolger] Re: MICRO TRAWLER
Ah yes, inboard air cooled diesel! Much safer in enclosing a diesel versus a gasoline powered engine. Should be very economical to run compared to gas. I also understand your desire to use the smaller MT versus a larger Hawkeye design; here in the US, in my home state of NJ, boat registration fees are also set by the length of the boat. It sounds like you are going to have one interesting MT when she is done! At this time the only thing I may suggest is giving the engine good ventilation, with possible consideration in mounting the engine intake high (possibly via pipe as high as the cabin or thereabouts) to avoid any chance of water intrusion into the air intake of your engine. A good and sturdy, watertight engine box should be considered, too. I am not sure what the climate is like in your Med. area, here in the Northeast US, weather systems are constantly changing, bringing weather from absolute calm, to violent thunderstorms in the spring and summer, hurricanes in the fall and strong northwesteries in the winter. A nice, weather tight cabin is a definite plus along with proper enclosures for inboard boat engines.
- True Doug, Ford FE gas truck engines had larger diameter crankshafts and cam profiles designed more for low RPM torque, compared to the equivalent car engines. Some GMC truck gassers even had exhaust valve rotators and stellite valve seats, anticipating heavier engine load demands.Your Isuzu may have had oil starvation issues if the oilpan capacity was not increased and the pickup lowered. I have a marinized 1956 Packard V8 with the oilpan capacity increased from 5 quarts to 4 gallons and an integral oil cooler built in. Most working boats of 25-30 feet and up have gone diesel but that may not be a practical option for the MT being discussed. 4 cycle outboards have been around for several years now and have a good track record even in small commercial fishboats that get hard use.