Thursday, June 30, 2011

That's it Good Luck

Last week was our final session, we discussed boat transportation, container options, lifting with a crane, launching and retrieving from a ramp and we talked about teak decks over sheet ply

We also talked about Portfolio's, case study approaches and Log Book of Learning 

Thanks for your input and interest in Repair and Transportation and Good Luck with the rest of your year in the BAT programme

Thursday, June 16, 2011

Final Session Tuesday 21st June

Link to Referencing website

Mike's yard, Launching and Hauling


Last week we discussed the visit to Boat Haulage Ltd and the techniques they use to load/unload and Transport boats by road and lift by crane
We also had a discussion on trailers, launching and retrieving on a ramp or beach by trailer. I have placed a power point on the student drive under Marine/Repair and Transportation and there is a link to a helpful (trailer requirements) website on the previous post on this Blog

Remember that transporting a boat is not just to protect what you can see there are items and equipment inside that need to be checked and secure also

Next week the final session will be to go over the course to make sure you are happy with what we have covered, to answer any questions relating to the assessment and to discuss the method to complete several jobs that a repair yard would do regularly

Thursday, June 9, 2011

Next Week 14 th June

Last week we travelled to Boat Haulage and had an interesting session on moving boats around we were shown a range of trucks that are being used for Transportation of boats ranging in size and up to 100 tons in weight. Pete from Boat Haulage also shared his experience with some ideas on blocking, lifting with a crane, and cradle types.

We then went to the Dry Stack Boat Park at Orams Marine which is another way of storing boats up to 12m long

Next week is the second to last session and  we will talk about some of the important aspects of trailer design, this is something you need to prep up on so that you can contribute to that discussion

What do you know about techniques for launching and retrieving on a boat ramp, trailer lights, trailer brakes, Tandem wheels?


http://www.nzta.govt.nz/resources/glovebox-guide-safe-loading-towing/guide-safe-loading-towing.html






Wednesday, June 1, 2011

next week 7 th June

Hi All,

We are going to travel down to Orams Dry stack to have a look at how that operates, and also visit Boat Haulage Ltd where Bob Wylie operator/manager will share some of his boat transportation experience with us,  we will leave from outside the workshop at 1:pm on Tuesday 7th.
You need to do some study on trailerboat trailers.
Preparation of the boat itself for shipping and moving is also a subject we need to discuss

What about containers, what size boat can we get into a container?

Thursday, May 26, 2011

Next Week 31st May

We will be discussing maintenance issues on metal boats this week, prior to that we will spend some time having a conversation on the workings of a slipway, I will re-visit some of my experience using a slipway of this type and ask you to consider discuss and present your views on the comparisons between this traditional type of slipway and what is now available at such haul-out facilities as Westpark, and Gulf Harbour.
What is the relevance of a slipway today?
looking at both Travelift and slipway facilities what are the advantages and disadvantages?
What is a Grid?

Maintenance on metal boats will be the focus for the second part of the session
http://www.kastenmarine.com/corrosion.htm
We will also discuss lead keels, deck hardware, and aluminium spars and rigging

Thursday, March 24, 2011

Next Week

 Next week 29 March

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
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

 






 

Thursday, March 10, 2011

galvanic corrosion

Hi All,

I found this a really interesting case of corrosion and its affect on timber. This is a carvel planked hull caulked over double diagonal no glue was used in this type of construction. She is ribbed and has a solid backbone structure with sawn keel floors fastened with through fastenings of bolts and copper nails riveted. What you can see is a copper tank, what would you think has caused the timber deterioration? comment about the construction.
What is the style of cradle that supports the hull? how do you go about a repair of this type? make some notes so that we can discuss it next time