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  • Sailboat Guide

Conrad 760 is a 25 ′ 0 ″ / 7.6 m monohull sailboat designed by Doug Peterson and built by Navimor/Conrad (POL) between 1980 and 1992.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

  • SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

  • D: Displacement of the boat in pounds
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

AKA CONRAD 25. The Conrad 760 (7.6 meters) was designed by Peterson (Design #73) for Navimor in Poland. There were at least 3 decks and two rigs available. (Not a ‘splashed’ copy of another boat as some have claimed.) They are sailed, raced and seen most often in Eastern Europe and especially Russia. Dimension shown here are only approximate. It is said that more than 300 may have been built. Similar boat built in Estonia, Russia (CT-25), Germany (BARON 76, RACE 77).

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peterson 25

Discussion in ' Sailboats ' started by Kiloman , Jan 5, 2010 .

Kiloman

Kiloman New Member

Hi all, happy new year. I recently bought a peterson 25ft sailboat. She should have been built in poland by the year 1984. I'm seeking for more informations about this boat type. Does anyone know a peterson 25 owner? I'm looking for design/building or any documents about this boat. Actually I'm living in Martinique Island where local authorities ask me for european certification of confomity. Thank you for your help. And sorry for my poor english  

Paul B

Paul B Previous Member

Kiloman said: ↑ Hi all, happy new year. I recently bought a peterson 25ft sailboat. She should have been built in poland by the year 1984. I'm seeking for more informations about this boat type. Does anyone know a peterson 25 owner? I'm looking for design/building or any documents about this boat. Actually I'm living in Martinique Island where local authorities ask me for european certification of confomity. Thank you for your help. And sorry for my poor english Click to expand...

Attached Files:

Image-5081743-33856900-2-websmall_0_e58b0bbc6d3375a7a70caf01ce6c959a_1.jpg.

Thank you! I'm not sure I recognise my ship. This one should be a racing version. here attached a picture of my boat.  
Kiloman said: ↑ Thank you! I'm not sure I recognise my ship. This one should be a racing version. here attached a picture of my boat. Click to expand...

tamkvaitis

tamkvaitis sailor/amateur designer

We have about 8-10 of these in Lithuania. As I know they were made in 3 versions: Racer Racer/cruiser with same rig as racer but diferent deck layout. Cruiser - had shorter masthead riging desck as racer cruiser. I don't think that any of the documents are available nowdays.  

salkbj

salkbj Junior Member

Here is an IOR certificate from one of the Russian Conrad 25 (Peterson 25). Source: http://25ft.org/Measurement/ Maybe you can satisfy your local authorities with the boat type being qualified for offshore racing by ISAF/ORC!  

Conrad25R_139_1100_08_favorit.gif

mshenefield

mshenefield Junior Member

Peterson 25'3" ior 1/4 ton racer I owned my peterson for about 5 years now.  
mshenefield said: ↑ I owned my peterson for about 5 years now. View attachment 40270 View attachment 40274 View attachment 40271 View attachment 40273 View attachment 40272 Click to expand...
Peterson 25'3" ior 1/4 ton racer I believe mine was built in 1980. Not sure what you mean.... :/  
Peterson 25'3" ior 1/4 ton racer She is in Mission Bay.  
mshenefield said: ↑ I believe mine was built in 1980. Not sure what you mean.... :/ Click to expand...
Peterson 25'3" ior 1/4 ton racer The name was Tickled Pink Again Now named... Tack Angle. I shuffled the letters around and came up with that. I purchased it from a fella in Dallas Texas. Where was Tickled Pink sailed from? I'll have to look at the hull again to be 100% sure, but I have a title with 1980 as the build date.  
mshenefield said: ↑ The name was Tickled Pink Again Now named... Tack Angle. I shuffled the letters around and came up with that. I purchased it from a fella in Dallas Texas. Where was Tickled Pink sailed from? I'll have to look at the hull again to be 100% sure, but I have a title with 1980 as the build date. Click to expand...
Peterson 25'3" ior 1/4 ton racer Very interesting! I'll check out the hull when I go out the next time. Where did you find the info on TP? Good memory? Race history? Thanks!  
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Peterson 25'3" ior 1/4 ton racer Now I'm even more confused. Is a 25 footer a 3/4 ton? btw Paul B, where in CA are you?  

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