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18 feet boat
18 feet boat with an outboard motor of 350 pounds at the aft end how much
will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
Get your old school books out & do a few calculations!!
One thing to remember is that if you find the waterline without any motor on the boat & then hang the 350lbs on the stern, you will get some lifting of the bow, so in actual fact the stern will probably go down the equivilent of 550lbs. Because no-one here knows the shape of your boat, they won't be able to give you much help. Basically, if you increase the weight by 350lbs then your boat will displace that much more weight IN WATER. Using Aussie galls. Assuming the water is distilled water, then it weighs 10lbs per gallon. 6.25 gallons per cu ft. Equals 5.6 cu ft displaced. Assuming your boat is 15.5ft at water line & average width at same line is 5.5ft. By my calc if the 350 is placed at dead centre is approx 3/4 inch overall. Now back to being on the stern?? My guess is bow up by 1 1/2 & stern down by 2 1/4 inches? Anybody else want to have a guess? BruceM "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
Christos, This sounds like a straight forward question, but it unfortunately is not. It really depends on the boat. Not just on the boat's lines (hull shape) but also on the boat's weight distribution (not just weight). If you own the boat, and are considering putting a motor on it that weighs 350#, then it might be worth your while to actually load the boat and then take a look at it. Buy seven 50# bags of 'tube sand', or fill buckets or whatever, and place the weight in the stern. If a motor is already on it and you know how much it weighs, then it would be better to just make up the difference, with sand or bricks or whatever, and take a look. I know a guy who did this, but he was trying to maximize fuel storage in a boat he was building and was doing some 'manual weight and balance' work ;) and already knew what motor he was going to use. Brian -- My boat project: http://www.advantagecomposites.com/tongass "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
On Sun, 30 Nov 2003 20:41:15 GMT, "christos"
wrote: 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos Here's a person looking for a rough, rough estimate. Use an equivalent box of 9 X 7 ft that's 58530X gm for X submersion in cm 1600lb = 727273 gm So submersion is 727273 / 58530 = 12.4 cm = 5 inches. Another 2 inch aft with the motor. Brian W |
18 feet boat
Or just get a coupla friends that weigh about 350 lbs and ... geez you know,
350 lbs is not that much :-) "Brian Whatcott" wrote in message ... On Sun, 30 Nov 2003 20:41:15 GMT, "christos" wrote: 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos Here's a person looking for a rough, rough estimate. Use an equivalent box of 9 X 7 ft that's 58530X gm for X submersion in cm 1600lb = 727273 gm So submersion is 727273 / 58530 = 12.4 cm = 5 inches. Another 2 inch aft with the motor. Brian W |
18 feet boat
thanks all for the reply.
the boat is bought with the motor . it has a V bottom is a planning hull is an open center console type and the fuel tank is located in the center line boat is foam filled the console is located from bow at 2.70 meters the center of fuel tank is located 3.30 meters from the bow and is 1.8 metrs long by 50cm by 28 cm 50 kgs batteries is under the console waterline lenght is 4.92 mt max width 2.03 mt what is your estimation for imersion of the boat in the salt water christos "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
I give up ! ! tell us?
BruceM "christos" wrote in message .. . thanks all for the reply. the boat is bought with the motor . it has a V bottom is a planning hull is an open center console type and the fuel tank is located in the center line boat is foam filled the console is located from bow at 2.70 meters the center of fuel tank is located 3.30 meters from the bow and is 1.8 metrs long by 50cm by 28 cm 50 kgs batteries is under the console waterline lenght is 4.92 mt max width 2.03 mt what is your estimation for imersion of the boat in the salt water christos "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
bruce i dont know
i launch the boat in the water and i took following draft fore 28 cm aft 40 cm boat contains 120 liters of gasoline the strange thing is that the drain holes located at 30 cm height from keel and the deck is 38 cm have you ever seen a boat with this consruction or you can say what is the weight of the boat with the cargo christos "BruceM" wrote in message ... I give up ! ! tell us? BruceM "christos" wrote in message .. . thanks all for the reply. the boat is bought with the motor . it has a V bottom is a planning hull is an open center console type and the fuel tank is located in the center line boat is foam filled the console is located from bow at 2.70 meters the center of fuel tank is located 3.30 meters from the bow and is 1.8 metrs long by 50cm by 28 cm 50 kgs batteries is under the console waterline lenght is 4.92 mt max width 2.03 mt what is your estimation for imersion of the boat in the salt water christos "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
I'm sorry Christos, but there's not really enough info for me to comment. I
can only guess what the boat really looks like. Usually in most boats of that size there are two different drain plugs. One within an inch or so of the absolute bottom of the boat. This is to drain the below deck compartment among some other functions like maybe checking if your below deck fuel tank has sprung a leak! The one higher up is for draining the deck area and for washing down after an outing. On many boats this is slightly lower than the deck because there is a slight well at the back of the deck to "collect" the water. Now to contradict that last one, there are more & more boats now being designed with "self draining decks", with scuppers attached to holes at the rear of the deck. The measurements don't mean a lot really because unless I know the deadrise & lots of other details, then I can't comment. Why are you concerned? Does it look too low in the water? Are you sure that the 30 CM holes aren't just from the outboard well? brumer "christos" wrote in message .. . bruce i dont know i launch the boat in the water and i took following draft fore 28 cm aft 40 cm boat contains 120 liters of gasoline the strange thing is that the drain holes located at 30 cm height from keel and the deck is 38 cm have you ever seen a boat with this consruction or you can say what is the weight of the boat with the cargo christos "BruceM" wrote in message ... I give up ! ! tell us? BruceM "christos" wrote in message .. . thanks all for the reply. the boat is bought with the motor . it has a V bottom is a planning hull is an open center console type and the fuel tank is located in the center line boat is foam filled the console is located from bow at 2.70 meters the center of fuel tank is located 3.30 meters from the bow and is 1.8 metrs long by 50cm by 28 cm 50 kgs batteries is under the console waterline lenght is 4.92 mt max width 2.03 mt what is your estimation for imersion of the boat in the salt water christos "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
"BruceM" wrote in message ... I'm sorry Christos, but there's not really enough info for me to comment. I can only guess what the boat really looks like. Usually in most boats of that size there are two different drain plugs. One within an inch or so of the absolute bottom of the boat. This is to drain the below deck compartment among some other functions like maybe checking if your below deck fuel tank has sprung a leak! is a hole for the drain of the hull in the lower point and in the center of the V The one higher up is for draining the deck area and for washing down after an outing. On many boats this is slightly lower than the deck because there is a slight well at the back of the deck to "collect" the water. the 30 cm holes drain out the mentioned well Now to contradict that last one, there are more & more boats now being designed with "self draining decks", with scuppers attached to holes at the rear of the deck. The measurements don't mean a lot really because unless I know the deadrise & lots of other details, then I can't comment. Why are you concerned? Does it look too low in the water? yes and water enters inside in the well and also coming on the deck Are you sure that the 30 CM holes aren't just from the outboard well? brumer is from the well but i feel that the boat going to sink and also i cant see water in the well always the deck is located about 10 cm higher and darin the waters in this well if i go to the aft and add my weight the well becomes full off water the water start enters in the deck and start flooding a near by, fish well adding more weight about 60 liters or more and make the things more worst. I DONT KNOW IF THIS CORRECT i start cutting on the deck holes and i inspect the internal foam for waters i dont see terrible things then i remove the foam in the aft section i raise the well bottom about 8 cm higher and relocate the drain holes also i fit a watertight cover to the fish well. in the new empty space installed a bilge pump never i test the boat after that. the boat is a Robalo US made somewhere 80 to 90 i am not sure is a strong construction and planning fast reaching easy 48 knots in calm wheather with 175 hp engine. i spend lot of my time and personal effort so i dont want to see my tries to fail the dead rise angle is 18 degrees and really i dont know what this means when the boat planning all the v is outside the water almost near to surface back to you christos "christos" wrote in message .. . bruce i dont know i launch the boat in the water and i took following draft fore 28 cm aft 40 cm boat contains 120 liters of gasoline the strange thing is that the drain holes located at 30 cm height from keel and the deck is 38 cm have you ever seen a boat with this consruction or you can say what is the weight of the boat with the cargo christos "BruceM" wrote in message ... I give up ! ! tell us? BruceM "christos" wrote in message .. . thanks all for the reply. the boat is bought with the motor . it has a V bottom is a planning hull is an open center console type and the fuel tank is located in the center line boat is foam filled the console is located from bow at 2.70 meters the center of fuel tank is located 3.30 meters from the bow and is 1.8 metrs long by 50cm by 28 cm 50 kgs batteries is under the console waterline lenght is 4.92 mt max width 2.03 mt what is your estimation for imersion of the boat in the salt water christos "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
Sorry I can't help you much more.
I found a pic of an old one here & by the look of the water line painted on it, it does look like it sits pretty low in the water at the stern. http://boats.iboats.com/robalo/cente.../34544-ad.html I wonder is it possible to reposition the fish tank or the fuel tank a bit further forward. Might pay to let a surveyor or someone assess the boat in person & preferrably in the water. Most boats under 20ft do sit down in the stern & some I've seen are downright dangerous sitting on anchor fishing in sloppy water. I owned one & other than shifting all movable gear forward, there isn't much you can do. If you are only using 30 litres a trip, then avoid topping the fuel tank up to the top. If this looks like the back of your boat, then it looks like someone has removed the outboard well. http://boats.iboats.com/cgi-bin/mari...&img=1&count=1 If that was mine I would get a pod made up to suit & "bolt" it on after I had rebuilt the stern back up to full height. Get the pod made up to extend the bottom lines & shape & as wide as you can to get more floatation than displacement. Anybody else got an idea here? BruceM "christos" wrote in message ... "BruceM" wrote in message ... I'm sorry Christos, but there's not really enough info for me to comment. I can only guess what the boat really looks like. Usually in most boats of that size there are two different drain plugs. One within an inch or so of the absolute bottom of the boat. This is to drain the below deck compartment among some other functions like maybe checking if your below deck fuel tank has sprung a leak! is a hole for the drain of the hull in the lower point and in the center of the V The one higher up is for draining the deck area and for washing down after an outing. On many boats this is slightly lower than the deck because there is a slight well at the back of the deck to "collect" the water. the 30 cm holes drain out the mentioned well Now to contradict that last one, there are more & more boats now being designed with "self draining decks", with scuppers attached to holes at the rear of the deck. The measurements don't mean a lot really because unless I know the deadrise & lots of other details, then I can't comment. Why are you concerned? Does it look too low in the water? yes and water enters inside in the well and also coming on the deck Are you sure that the 30 CM holes aren't just from the outboard well? brumer is from the well but i feel that the boat going to sink and also i cant see water in the well always the deck is located about 10 cm higher and darin the waters in this well if i go to the aft and add my weight the well becomes full off water the water start enters in the deck and start flooding a near by, fish well adding more weight about 60 liters or more and make the things more worst. I DONT KNOW IF THIS CORRECT i start cutting on the deck holes and i inspect the internal foam for waters i dont see terrible things then i remove the foam in the aft section i raise the well bottom about 8 cm higher and relocate the drain holes also i fit a watertight cover to the fish well. in the new empty space installed a bilge pump never i test the boat after that. the boat is a Robalo US made somewhere 80 to 90 i am not sure is a strong construction and planning fast reaching easy 48 knots in calm wheather with 175 hp engine. i spend lot of my time and personal effort so i dont want to see my tries to fail the dead rise angle is 18 degrees and really i dont know what this means when the boat planning all the v is outside the water almost near to surface back to you christos "christos" wrote in message .. . bruce i dont know i launch the boat in the water and i took following draft fore 28 cm aft 40 cm boat contains 120 liters of gasoline the strange thing is that the drain holes located at 30 cm height from keel and the deck is 38 cm have you ever seen a boat with this consruction or you can say what is the weight of the boat with the cargo christos "BruceM" wrote in message ... I give up ! ! tell us? BruceM "christos" wrote in message .. . thanks all for the reply. the boat is bought with the motor . it has a V bottom is a planning hull is an open center console type and the fuel tank is located in the center line boat is foam filled the console is located from bow at 2.70 meters the center of fuel tank is located 3.30 meters from the bow and is 1.8 metrs long by 50cm by 28 cm 50 kgs batteries is under the console waterline lenght is 4.92 mt max width 2.03 mt what is your estimation for imersion of the boat in the salt water christos "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
Hi,
How high is the transom on that boat Christos? You know, from the top of the fibreglass that the motor sits on down to the bottom of the boat? Is it 25inches or 19? In that picture of the boat it almost looks like it is a short leg. BruceM "BruceM" wrote in message ... Sorry I can't help you much more. I found a pic of an old one here & by the look of the water line painted on it, it does look like it sits pretty low in the water at the stern. http://boats.iboats.com/robalo/cente.../34544-ad.html I wonder is it possible to reposition the fish tank or the fuel tank a bit further forward. Might pay to let a surveyor or someone assess the boat in person & preferrably in the water. Most boats under 20ft do sit down in the stern & some I've seen are downright dangerous sitting on anchor fishing in sloppy water. I owned one & other than shifting all movable gear forward, there isn't much you can do. If you are only using 30 litres a trip, then avoid topping the fuel tank up to the top. If this looks like the back of your boat, then it looks like someone has removed the outboard well. http://boats.iboats.com/cgi-bin/mari...&img=1&count=1 If that was mine I would get a pod made up to suit & "bolt" it on after I had rebuilt the stern back up to full height. Get the pod made up to extend the bottom lines & shape & as wide as you can to get more floatation than displacement. Anybody else got an idea here? BruceM "christos" wrote in message ... "BruceM" wrote in message ... I'm sorry Christos, but there's not really enough info for me to comment. I can only guess what the boat really looks like. Usually in most boats of that size there are two different drain plugs. One within an inch or so of the absolute bottom of the boat. This is to drain the below deck compartment among some other functions like maybe checking if your below deck fuel tank has sprung a leak! is a hole for the drain of the hull in the lower point and in the center of the V The one higher up is for draining the deck area and for washing down after an outing. On many boats this is slightly lower than the deck because there is a slight well at the back of the deck to "collect" the water. the 30 cm holes drain out the mentioned well Now to contradict that last one, there are more & more boats now being designed with "self draining decks", with scuppers attached to holes at the rear of the deck. The measurements don't mean a lot really because unless I know the deadrise & lots of other details, then I can't comment. Why are you concerned? Does it look too low in the water? yes and water enters inside in the well and also coming on the deck Are you sure that the 30 CM holes aren't just from the outboard well? brumer is from the well but i feel that the boat going to sink and also i cant see water in the well always the deck is located about 10 cm higher and darin the waters in this well if i go to the aft and add my weight the well becomes full off water the water start enters in the deck and start flooding a near by, fish well adding more weight about 60 liters or more and make the things more worst. I DONT KNOW IF THIS CORRECT i start cutting on the deck holes and i inspect the internal foam for waters i dont see terrible things then i remove the foam in the aft section i raise the well bottom about 8 cm higher and relocate the drain holes also i fit a watertight cover to the fish well. in the new empty space installed a bilge pump never i test the boat after that. the boat is a Robalo US made somewhere 80 to 90 i am not sure is a strong construction and planning fast reaching easy 48 knots in calm wheather with 175 hp engine. i spend lot of my time and personal effort so i dont want to see my tries to fail the dead rise angle is 18 degrees and really i dont know what this means when the boat planning all the v is outside the water almost near to surface back to you christos "christos" wrote in message .. . bruce i dont know i launch the boat in the water and i took following draft fore 28 cm aft 40 cm boat contains 120 liters of gasoline the strange thing is that the drain holes located at 30 cm height from keel and the deck is 38 cm have you ever seen a boat with this consruction or you can say what is the weight of the boat with the cargo christos "BruceM" wrote in message ... I give up ! ! tell us? BruceM "christos" wrote in message .. . thanks all for the reply. the boat is bought with the motor . it has a V bottom is a planning hull is an open center console type and the fuel tank is located in the center line boat is foam filled the console is located from bow at 2.70 meters the center of fuel tank is located 3.30 meters from the bow and is 1.8 metrs long by 50cm by 28 cm 50 kgs batteries is under the console waterline lenght is 4.92 mt max width 2.03 mt what is your estimation for imersion of the boat in the salt water christos "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
first, I think the only way to do the calculation would be to take
measurements off the hull and use one of the free hull design programs. that's because the bouyancy depends on the underwater size and shape. of course you could do the calculations the old fashioned way using flat surfaces between stations. adjusting for angle of trim would be hard to do, I imagine. second, I don't think it will be good enough to get the water surface at the level of the motor well when the boat is at rest. Its when the boat comes down off a plane and the backwash hits the transom that the most water will come aboard. That's what you have to aim for. good luck -- ------------------------------------------------------------------------------ William R Watt National Capital FreeNet Ottawa's free community network homepage: www.ncf.ca/~ag384/top.htm warning: non-freenet email must have "notspam" in subject or it's returned |
18 feet boat
the boat looks like the photo you send me
transom height is 60 cm originally now ifs modified and is 8 cm less in order to install a shorter leg engine this done from the previous owner so i am not well known christos "BruceM" wrote in message ... Hi, How high is the transom on that boat Christos? You know, from the top of the fibreglass that the motor sits on down to the bottom of the boat? Is it 25inches or 19? In that picture of the boat it almost looks like it is a short leg. BruceM "BruceM" wrote in message ... Sorry I can't help you much more. I found a pic of an old one here & by the look of the water line painted on it, it does look like it sits pretty low in the water at the stern. http://boats.iboats.com/robalo/cente.../34544-ad.html I wonder is it possible to reposition the fish tank or the fuel tank a bit further forward. Might pay to let a surveyor or someone assess the boat in person & preferrably in the water. Most boats under 20ft do sit down in the stern & some I've seen are downright dangerous sitting on anchor fishing in sloppy water. I owned one & other than shifting all movable gear forward, there isn't much you can do. If you are only using 30 litres a trip, then avoid topping the fuel tank up to the top. If this looks like the back of your boat, then it looks like someone has removed the outboard well. http://boats.iboats.com/cgi-bin/mari...&img=1&count=1 If that was mine I would get a pod made up to suit & "bolt" it on after I had rebuilt the stern back up to full height. Get the pod made up to extend the bottom lines & shape & as wide as you can to get more floatation than displacement. Anybody else got an idea here? BruceM "christos" wrote in message ... "BruceM" wrote in message ... I'm sorry Christos, but there's not really enough info for me to comment. I can only guess what the boat really looks like. Usually in most boats of that size there are two different drain plugs. One within an inch or so of the absolute bottom of the boat. This is to drain the below deck compartment among some other functions like maybe checking if your below deck fuel tank has sprung a leak! is a hole for the drain of the hull in the lower point and in the center of the V The one higher up is for draining the deck area and for washing down after an outing. On many boats this is slightly lower than the deck because there is a slight well at the back of the deck to "collect" the water. the 30 cm holes drain out the mentioned well Now to contradict that last one, there are more & more boats now being designed with "self draining decks", with scuppers attached to holes at the rear of the deck. The measurements don't mean a lot really because unless I know the deadrise & lots of other details, then I can't comment. Why are you concerned? Does it look too low in the water? yes and water enters inside in the well and also coming on the deck Are you sure that the 30 CM holes aren't just from the outboard well? brumer is from the well but i feel that the boat going to sink and also i cant see water in the well always the deck is located about 10 cm higher and darin the waters in this well if i go to the aft and add my weight the well becomes full off water the water start enters in the deck and start flooding a near by, fish well adding more weight about 60 liters or more and make the things more worst. I DONT KNOW IF THIS CORRECT i start cutting on the deck holes and i inspect the internal foam for waters i dont see terrible things then i remove the foam in the aft section i raise the well bottom about 8 cm higher and relocate the drain holes also i fit a watertight cover to the fish well. in the new empty space installed a bilge pump never i test the boat after that. the boat is a Robalo US made somewhere 80 to 90 i am not sure is a strong construction and planning fast reaching easy 48 knots in calm wheather with 175 hp engine. i spend lot of my time and personal effort so i dont want to see my tries to fail the dead rise angle is 18 degrees and really i dont know what this means when the boat planning all the v is outside the water almost near to surface back to you christos "christos" wrote in message .. . bruce i dont know i launch the boat in the water and i took following draft fore 28 cm aft 40 cm boat contains 120 liters of gasoline the strange thing is that the drain holes located at 30 cm height from keel and the deck is 38 cm have you ever seen a boat with this consruction or you can say what is the weight of the boat with the cargo christos "BruceM" wrote in message ... I give up ! ! tell us? BruceM "christos" wrote in message .. . thanks all for the reply. the boat is bought with the motor . it has a V bottom is a planning hull is an open center console type and the fuel tank is located in the center line boat is foam filled the console is located from bow at 2.70 meters the center of fuel tank is located 3.30 meters from the bow and is 1.8 metrs long by 50cm by 28 cm 50 kgs batteries is under the console waterline lenght is 4.92 mt max width 2.03 mt what is your estimation for imersion of the boat in the salt water christos "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
18 feet boat
Hi Christos,
Well you found the problem yourself. The person who cut down the transom should have 15cm cut off his legs & see how he goes! ! ! You don't really have any option but to get out the fibreglass & rebuild the transom & find yourself a long leg outboard. If you intend using this boat in open seas & out wide fishing the get a decent experienced person to evaluate the modification because with minimal extra work, you could take the transom up even higher than the height required for a long leg & go for an extra-long one. long shaft== 20inches == 508mm extralong== 25inches == 635mm I'll say it again though ........... discuss the option of fitting a pod to the back of that boat. You will be amazed at the extra deck room available for either a full width bench seat or a decent area for "the fight" with that big one. Are there any marina's around your area? Go have a look at some of the other boats to get some ideas. All the best Christos, & goodluck with your modifications. It will end up a real nice boat when you do get it right. BruceM "christos" wrote in message ... the boat looks like the photo you send me transom height is 60 cm originally now ifs modified and is 8 cm less in order to install a shorter leg engine this done from the previous owner so i am not well known christos "BruceM" wrote in message ... Hi, How high is the transom on that boat Christos? You know, from the top of the fibreglass that the motor sits on down to the bottom of the boat? Is it 25inches or 19? In that picture of the boat it almost looks like it is a short leg. BruceM "BruceM" wrote in message ... Sorry I can't help you much more. I found a pic of an old one here & by the look of the water line painted on it, it does look like it sits pretty low in the water at the stern. http://boats.iboats.com/robalo/cente.../34544-ad.html I wonder is it possible to reposition the fish tank or the fuel tank a bit further forward. Might pay to let a surveyor or someone assess the boat in person & preferrably in the water. Most boats under 20ft do sit down in the stern & some I've seen are downright dangerous sitting on anchor fishing in sloppy water. I owned one & other than shifting all movable gear forward, there isn't much you can do. If you are only using 30 litres a trip, then avoid topping the fuel tank up to the top. If this looks like the back of your boat, then it looks like someone has removed the outboard well. http://boats.iboats.com/cgi-bin/mari...&img=1&count=1 If that was mine I would get a pod made up to suit & "bolt" it on after I had rebuilt the stern back up to full height. Get the pod made up to extend the bottom lines & shape & as wide as you can to get more floatation than displacement. Anybody else got an idea here? BruceM "christos" wrote in message ... "BruceM" wrote in message ... I'm sorry Christos, but there's not really enough info for me to comment. I can only guess what the boat really looks like. Usually in most boats of that size there are two different drain plugs. One within an inch or so of the absolute bottom of the boat. This is to drain the below deck compartment among some other functions like maybe checking if your below deck fuel tank has sprung a leak! is a hole for the drain of the hull in the lower point and in the center of the V The one higher up is for draining the deck area and for washing down after an outing. On many boats this is slightly lower than the deck because there is a slight well at the back of the deck to "collect" the water. the 30 cm holes drain out the mentioned well Now to contradict that last one, there are more & more boats now being designed with "self draining decks", with scuppers attached to holes at the rear of the deck. The measurements don't mean a lot really because unless I know the deadrise & lots of other details, then I can't comment. Why are you concerned? Does it look too low in the water? yes and water enters inside in the well and also coming on the deck Are you sure that the 30 CM holes aren't just from the outboard well? brumer is from the well but i feel that the boat going to sink and also i cant see water in the well always the deck is located about 10 cm higher and darin the waters in this well if i go to the aft and add my weight the well becomes full off water the water start enters in the deck and start flooding a near by, fish well adding more weight about 60 liters or more and make the things more worst. I DONT KNOW IF THIS CORRECT i start cutting on the deck holes and i inspect the internal foam for waters i dont see terrible things then i remove the foam in the aft section i raise the well bottom about 8 cm higher and relocate the drain holes also i fit a watertight cover to the fish well. in the new empty space installed a bilge pump never i test the boat after that. the boat is a Robalo US made somewhere 80 to 90 i am not sure is a strong construction and planning fast reaching easy 48 knots in calm wheather with 175 hp engine. i spend lot of my time and personal effort so i dont want to see my tries to fail the dead rise angle is 18 degrees and really i dont know what this means when the boat planning all the v is outside the water almost near to surface back to you christos "christos" wrote in message .. . bruce i dont know i launch the boat in the water and i took following draft fore 28 cm aft 40 cm boat contains 120 liters of gasoline the strange thing is that the drain holes located at 30 cm height from keel and the deck is 38 cm have you ever seen a boat with this consruction or you can say what is the weight of the boat with the cargo christos "BruceM" wrote in message ... I give up ! ! tell us? BruceM "christos" wrote in message .. . thanks all for the reply. the boat is bought with the motor . it has a V bottom is a planning hull is an open center console type and the fuel tank is located in the center line boat is foam filled the console is located from bow at 2.70 meters the center of fuel tank is located 3.30 meters from the bow and is 1.8 metrs long by 50cm by 28 cm 50 kgs batteries is under the console waterline lenght is 4.92 mt max width 2.03 mt what is your estimation for imersion of the boat in the salt water christos "christos" wrote in message ... 18 feet boat with an outboard motor of 350 pounds at the aft end how much will submerged in the water the boat weights 1600 pounds without engine. christos |
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