This section of my repair and Transportation blog I will update each week as we visit yards and participate in discussion
Last week we looked at the affect on timber from a metal tank that was allowed to come into contact with timber, I would like you to think about other types of rot damage, we will discuss this and I would like you all to participate in the discussion
We talked very briefly of grounding all metals exposed to seawater used in boat construction. I would like you to think about that and do some study, we will be participating in discussion on the various methods of protecting metals underwater, both salt and freshwater, is there any difference?
If we are able to get transport we will be visiting Gulf Harbour with a probability of being able to view metal deterioration and protection first hand. We will also look at the travelift operation, different cradle options and view the operation of a repair and maintenance yard first hand
I have booked a Van for lectures 5/4/11, 12/4/11, 3/5/11 and are wait listed next week
Last week we also talked about case studies and the best method to explain the jobs and the order they should be completed in when you do a case study. I have added to the practice case study with some notes to assist to lay out the case studies in a workable format, you should have a look at it with a view to discussing your thoughts and questions on this in class
Those of you that haven't g mailed me how about it guys just another way to keep in contact
Next Week 5th April
We will travel to Westpark and to the TeAtatu Boating club next week. Westpark is a haulout area which is not unlike Gulf Harbour but it is a good place to see a wide range of work being undertaken we can discuss what we see on the spot, we don't have as far to travel and so we should have more time to consider the actual work. Our focus is intended to be to learn about a range of jobs and some approaches we could use to complete a repair or perform maintenance
On the way to Westpark we will stop off at Te Atatu Boating club. This is worth a look there is always interesting work being undertaken. this is more a powerboat location and there are some quite large boats hauled out on the concrete ramp on trailers which aren't roadworthy but are operational within the grounds of the club
We should also take time to catch up on what was important/interesting from the Gulf Harbour Trip I would like to do that in the form of class discussion, give it some thought and be ready to participate.
If you have any interesting pics from that trip it would be great if you sent them to me and they could be put on the Blog
We still haven't finished our discussions on some of the points from last week such as other types of Rot, and the Grounding of metals,
Next Week 12 April
The trip this week was a little bit wet and cold however we did get to view different support structures, more osmosis repair, metal protection underwater.
I did explain a little of the problems that can occur when Gel coat starts to age and the UV damage, along with the knocks that a hull takes after a few years means that its time for resurfacing the hull, a decision at that time has to be made, do we touch up the gel coat and polish the hull or is it time to repaint, I want to have a discussion on this next week, think about a paint system that could be used, it would be helpful to have an idea of the cost of the paint, we could work out a labour cost in class what other costs/problems are incurred when we paint a hull, what is the process
I thought the repair that the boatbuilder was working on was interesting, did you think the method he said he was using to join the planking was OK?
At the Te Atatu boating club hardstand we were able to note the method which was being used to spread the load across the underside of the deck what was that?
It was also interesting to note the differences in the traditional carvel planked boats, there were several older ones with a lot of work to do and then at Westpark several examples that were excellent quality, we need to think about if you owned one of these boats what a maintenance plan might entail
I have would like to explain a method you can use to work out a labour estimate on the practice case study I will show you that next week.
We will spend next week in the theory room catching up on some of these ideas I have put forward
Other types of rot repair
Bonding of metal's for protection (difference between grounding and bonding)http://www.yachtsurvey.com/maitenance.htm
Gel coat repairs, and re paints http://iyp.yachtpaint.com/australia/default.asp
joining the planking on a timber repair
How to work out a labour cost on the practice case study
Next Week 3rd May
Hi All,
I have prepared a schedule for the remaining lectures about Maintaining Repairing and Transporting boats this should give you all an idea on the general subject area we will discuss during each session, the schedule is flexible so that if there is something in particular we need to cover or spend more time on we can do that
Repair and Transportation
Lecture subjects, (red font not yet covered)
1. Course introduction, class introduction, Assessment description, reading material and websites. Osmosis repair, timber deterioration
2. Osmosis repair, Timber and metal corrosion
3. Field trip Gulf Harbour, Osmosis repair, cradle style, Trave lift operation, hardstand operation, general repair all materials, keel repair
4. Field trip Te Atatu boat club, Westpark, Cradle style, hardstand operation, boat support systems, repair all materials, carvel construction
5. Theory session, cost estimating, painting over Gel coat, metal protection underwater, wood deterioration (dry rot, wet rot, damp timber and metal in contact)
6. FRP maintenance and repair, alteration, a maintenance programme for an FRP boat, Composite repair, retro fitting (composite)
7. Field trip, slipway operation Devonport and Milford
8. Metal construction maintenance and repair, a maintenance programme for a metal boat, protection of metal surfaces, specific jobs for all construction types
8. Metal construction maintenance and repair, a maintenance programme for a metal boat, protection of metal surfaces, specific jobs for all construction types
9. Field Trip, Dry stack operation Oram’s Marine
10. Marine Haulage, Trailers, Boat preparation for moving, crane lifting, cradle moving, ship storage
11. Review all lectures/subjects/assessments
12. Review all lectures
We have completed session 5 and so on the 3rd May we will be covering the information itemised on 6 so do some thinking about work on FRP construction
Something for you to ponder, those of you that have communicated with me by gmail already have seen this suggestion
You must do your own study which is expected to be more than twice the time that you spend at lecture sessions, we have spent 17.5 hours at lectures so far this semester, Have you completed 40 hours of your own study?
I see my role as providing a learning platform for you, therefore I invite you to start your own blog with information that we have discussed so far on field trips or class sessions, I can then see if you are on the right track, maybe you could do a blog or several blogs in groups its a great way of comparing and consolidating your own interpretation of ideas with others.
If you have another group communication you prefer that's fine maybe a google doc
Next week 24th May (two week break)
Hi All,
We are going to go to Devonport yacht club and to Milford cruising club to have a look at how boats are hauled out using a cradle on a slipway, this means that lecture 7 will take place the following week
We can also observe a grid and discuss the purpose and relevance to today's boatbuilding, maintenance, repair
Last Tuesday we didn't finish FRP repair and maintenance and so we will do that probably in week 11
Remember if you decide to do a blog, or a google doc that can also be included in your logbook as a means of study
Something for you to ponder, those of you that have communicated with me by gmail already have seen this suggestion
You must do your own study which is expected to be more than twice the time that you spend at lecture sessions, we have spent 17.5 hours at lectures so far this semester, Have you completed 40 hours of your own study?
I see my role as providing a learning platform for you, therefore I invite you to start your own blog with information that we have discussed so far on field trips or class sessions, I can then see if you are on the right track, maybe you could do a blog or several blogs in groups its a great way of comparing and consolidating your own interpretation of ideas with others.
If you have another group communication you prefer that's fine maybe a google doc
Next week 24th May (two week break)
Hi All,
We are going to go to Devonport yacht club and to Milford cruising club to have a look at how boats are hauled out using a cradle on a slipway, this means that lecture 7 will take place the following week
We can also observe a grid and discuss the purpose and relevance to today's boatbuilding, maintenance, repair
Last Tuesday we didn't finish FRP repair and maintenance and so we will do that probably in week 11
Remember if you decide to do a blog, or a google doc that can also be included in your logbook as a means of study
what's retro fitting??
ReplyDeleteHi Pierce,
ReplyDeleteRetro fitting is when you add or alter when the boat is complete, its an afterthought which may mean taking into account structural considerations. This could be the fitting of an extra winch on a sailboat, the addition of a live bait tank on a sport- fisherman, or a bow thruster on a powerboat or cruising yacht these would all be retro fits when they had not been allowed for structurally when the boat was first built.