Its a tricky art, but this book shows exactly how it is done in clear, step-by-step diagrammatic stages. Aimed specifically at the amateur DIY builder, it will The first step here, as in all three of the bulkheads and frames will go, and more lofting skill if the boat is not built from full -. Total Comments: 0. Sign in:. Rate my site. Not bad. Diy yakima boat loader would be the tendency connected with current favorite information, young children and can on the research on the se Lofting a boat a step-by-step manual pdf.
Lofting a boat a step-by-step manual pdf is definitely an example of a few possibilities inside at this time Small children with the track A new Sadler 26 rudder. The following steps 3, 4, 5 and 6 will show you how to plot the Transom end position of the Waterline. We can, however, draw in a line where we know the Waterline intersects the Transom. Step 4 1 Using a straight edge or ruler, join these two points together with a faint pencil line. Step 6 1 Lay the tick stick with the information picked up from Step 5 along the line drawn in Step 4.
Steps 8, 9 and 10 will show you how to find this point. Step 10 Using a straight edge, join these two points together with a faint line. Where this line crosses the Rabbetline is the forward intersection point of WL 2 in the Half-breadth View. With this point plotted, we now have all the information needed to draw WL 2 in the Half-breadth View. Remember, the only definite fixed points are where the Waterline intersects with the Rabbetline and the Transom.
Any discrepancies between the Half-breadth View and the Body Plan will be initially resolved when we plot the Buttock Lines, and any final differences will be resolved when we plot the Diagonals. Now repeat the process Steps 1 to 11 and plot all of the remaining Waterlines in the Half-breadth View. We should now have a drawing that looks similar to the one on the following page.
When all of the Waterlines have been drawn in the Half-breadth View, we can join all the Transom points together to show the shape of the Transom in the Half-breadth View. But please be aware that the shape we see is not a true representation of the Transom because of the angle at which we are looking at it But more about that later when we come to develop and expand the Transom to show its true size and shape.
Step 1 of 12 1 Lay the tick stick on B1, forward section, using either the Datum or any Waterline as a reference. Mark on the Buttock intersections of Stns 1, 2 and 3. Step 4 1 Using a straight edge, join together these two points with a feint line. This will then give us a complete set of points with which to plot the Buttock Line.
The techniques to do this are shown in Steps 6 to Draw a faint line through these two points and extend the line until it crosses the Sheerline. This is the true Sheer intersection point of the Buttock Line. We now have all of the information needed to draw the forward section of the Buttock Line. Sheer or Profile View With all of the Buttocks plotted, our drawing will look something like the one shown above, but obviously every boat will be different. As you can see in the drawing, some of the errors in B2 are similar to the errors in B1.
Before we go on to correct the Buttocks in the Body Plan and the Profile View, we are going to look at the techniques used to plot a Buttock Line that does not end at the Transom.
The following pages will show you how to pick up the extra information needed to draw in a Buttock Line like this. The end result will be a Buttock Line similar in shape to the one in the previous Profile View drawing.
Please note: B3 is only drawn in for illustrative purposes. Step 3 1 Lay the tick stick along B3, using the AP as a reference, and pick up the intersection points of B3 with all of the Waterlines and the Sheerline. Draw a line through these points and extend the line until it crosses the Sheerline. This is the true intersection point of the Buttock Line.
Step 7 With all of the points plotted, we can now use a batten to join them together to draw in the aft section of B3. The forward section will have been plotted and drawn as normal with the techniques we used earlier. The following pages will show the techniques needed to do this. Some people may tell you to leave any corrections until the Diagonals have been plotted.
Therefore, if we correct the Body Plan and the Half-breadth View before plotting the Diagonals, we can then trust any measurements used to plot the Diagonals and make any final corrections. Step 2 1 Lay the tick stick on B1, using the Datum as a reference, and plot the corrected Buttock intersection points, picked up in Step 1, onto the Stations. Step 3 Having re-faired the Stations using the corrected Buttock points, this will almost certainly mean that there will now be discrepancies in the Waterline Half-breadths.
For clarity, the re-faired line has been drawn in as a broken line — to make it easier to see any difference. All that remains is to re-fair the Waterlines using these corrected points. For clarity, the corrected lines are shown as dashed lines. The next section of the book shows the range of techniques used to plot and fair the Diagonals and then carry out any final corrections to the Body Plan, Half-breadth View and Profile View.
The following pages will show the range of techniques used to pick up, plot and fair the Diagonals. However, this could make the final lofting drawing confusing, as they would be overlaying the existing Waterlines.
Step 7 Profile or Sheer View 1 Using a straight edge, join these two points together with a feint line. Step 10 1 Using a straight edge, join these two points together with a feint line, extending into the area where the Diagonal is being plotted.
This is the point where the forward part of the Diagonal ends. Step 15 Profile or Sheer View 1 Join these two points together with a straight edge, and draw on a feint line. We can then pick up and transfer this intersection point to the Half-breadth View.
Step 18 1 Using a straight edge, join these points together with a feint line which projects out into the area where the Diagonal is being plotted. Step 20 All that remains now is to join all of these points together with a batten to see how fair, or not, the Diagonal is.
The next section deals with fairing the Diagonals and carrying out any final corrections to the other three views.
At this stage in the lofting process, any final corrections will usually be quite small because of the earlier corrections carried out after plotting and fairing the Buttock Lines.
Step 4 As you can see from the Body Plan, when we fair Stn 1 using the final correction to the Diagonal it has changed the following: the Half-breadth at WL 3; the Half-breadth at WL 2; the intersection height with B1. These discrepancies will now need to be transferred to, and corrected in, both the Halfbreadth and the Profile Views. Step 5 With the Body Plan completed, we can now carry out the final corrections to both the Half-breadth and the Profile Views, using similar techniques to those used earlier when plotting and fairing the Buttock Lines.
The process to carry out the final corrections is outlined below: 1 Pick up the corrected Waterline Half-breadths from the Body Plan, transfer them to their corresponding Waterlines in the Half-breadth View and re-fair the Waterlines. We now have a fair hull. Step 8 1 Using a batten, re-fair the Waterlines using these final corrections.
Step 14 Profile or Sheer View Using a fairing batten, join together all the final correction points plotted in the Profile View. For clarity, the corrected line is shown as a dashed line.
When all of these corrections have been completed, we should have four views Profile, Half-breadth, Body Plan and Diagonals where the measurements in one view relate to all the other views. If the boat has a plumb Transom, then its true shape is already drawn in the Body Plan. Too many lines in this area close to the AP can lead to confusion.
For clarity, only the aft section of the Body Plan is shown here.
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