2 August, 2009. Moving on.
This will be the last entry in the dedicated pages that followed the building of ‘Waratah’. With ‘Waratah’ nearing completion, I will continue reporting in the main blog section. I am in South Africa now, and on August 6 we will move ‘Waratah’ to Durban for final outfitting and launch.
21 July, 2009. The final stages (2)
And some more pics of ‘Waratah’. One of the stainless steel support for the bow rollers, the others of the interior which show some of the lighting system. We used as much as possible 24V LED units, for their low energy consumption.
On July 26th I will fly to South Africa to prepare ‘Waratah’ for the launch in Durban, which is scheduled for August 6th.
21 July, 2009. The final stages (1)
The interior and systems of ‘Waratah’ finally start to take real shape now. Here a few impressions of how calorifier and fuel filters are arranged around the engine. Shots from the galley, with refrigerating system, ice box, and water manifolds, and of course the heads, sinks, and wash basins.
The calorifier can produce a limited amount of hot water, either by using the engine cooling water, or by using a 220 VAC heating element. The refrigerating compressor for the ice box runs on the 24 VDC house bank only.
25 June, 2009. Fuel filters.
An important part of creating a reliable fuel system, is the choice of the right primary fuel filters. This is the first filter (or set of filters) we meet in the fuel system, going from the tank to the engine. On the engine itself is a second fuel filter, which is part of the engine assembly. The first filter has a mesh size of 10 micron, the second usually 2 – 5 micron.
On a seagoing vessel there is always a chance of getting sea water in the fuel tanks. Also changes between day and night temperature, can cause condensation of water in the fuel tanks, especially in places with high air humidity. Therefore a good fuel filter should also have water separating capabilities.
On ‘Waratah’ I am using two Racor filters in parallel. One is in use, and the other on stand-by. The filters can be isolated by a number of valves in the fuel system. In case of the filter in use getting clogged, I can change over to the stand-by filter without disrupting the fuel flow to the engine. The clogged filter cartridge can now easily be exchanged.
I also like the little manual priming pump on top of the filter assembly.
The first picture shows the 2 filter assemblies, the second a box with spare cartridges.
25 March, 2009. Long overdue update on ‘Waratah’.
I had so much trouble with my internet connection, and the Great Firewall of China in the past few weeks. It made it impossible for me to update my blog properly. Finally a chance to post an update and pictures.
The interior of Waratah is painted now, and in the final stage of being finished. I have selected a cream white colour, and a rosewood finish, which makes the interior look light and spacious. Most boats are far too dark inside. The first pictures give a bit of an idea how the interior is looking now. I also added a picture of the mast step, with the sheaves for all the lines going back to the cockpit.
02 February, 2009. The power plant.
‘Waratah’ will have a main electrical system which is 24 VDC. There is some equipment, like the navigation equipment, which is only available in 12 VDC. So this equipment will have it’s own power supply through a 24/12 VDC converter, via a 12 VDC battery, which also acts as a UPS.
And then there will be a 24 VDC/ 220 VAC converter, for the electric water heater, outlets for laptop and other 220 VAC equipment.
The main house bank is about 450 Ah, and will be charged by a Balmar marine alternator, which has been added to the Yanmar engine. The engine has it’s own 12 VDC starting battery, with matching alternator which came with the engine.
The Balmar alternator is rated at 140 Ah at 24 VDC, and that is about as big as you can fit safely on my Yanmar engine, without putting too much stress on the non-drive end bearing. The two pictures show the arrangement.
01 February, 2009. Holding tanks.
After a number of modifications the sewage holding tanks are now up to my liking. ‘Waratah’ will have two heads (= toilets, for those not familiar with the marine lingo), one forward, and one aft next to the master cabin. Each has a holding tank, to allow storage of sewage in waters where you can not just dump it overboard. The holding tanks are made of steel, and have a capacity of about 45 – 50 liters each.
Now when I sailed professionally as a marine engineer, I had to be able to fix whatever breaks down on a seagoing vessel. The jobs I hated most, was working on the sanitary systems. So for ‘Waratah’ I wanted a system which first of all has few components that can fail, and further is easy to maintain and repair. For the toilets I selected standard hand operated ones, which require little more regular maintenance than adding a bit of vegetable oil in the hand pump once every 1 – 2 weeks.
For the holding tanks I wanted a system without any pumps, because they are the biggest source of trouble. And to replace and repair them is literally a ‘shitty’ job. So I decided to place my holding tanks high, above the heeled waterline of the boat. In restricted areas, or in a marina, the sewage goes into the tank from the top. There is a discharge line at the bottom of the tank, with one valve at the tank, and one valve at the hull. Where dumping of the sewage is allowed, I simply open both valves, and gravity does the rest. If this line gets blocked, it is easy to unblock it by pushing a spring through it from the inspection cover. That way I don’t have to open hoses and connections inside the boat. Because THAT is really not a nice job.
The tanks can also be pumped out from a connection on deck. In unrestricted waters, the two discharge valves would be open, and the sewage coming from the toilets, would go through the tanks and straight down and overboard. Another advantage is that by placing the holding tanks that high, is that I don’t have to install a vented loop (which goes above the waterline) into the discharge line. Another source of failures, and bad smell.
31 January, 2009. Roughing it out.
‘A picture tells more than 1000 words’, is how the saying goes. Well, here are a few more pictures of the interior of ‘Waratah’. Wynand and his crew have been doing a fantastic job. I love the big aft cabin, and the spacious salon. There are plenty of lockers, 43 all in all, of which you can never have enough on a boat.