marinheiro

does look like some glue failure in places...

a reasonable Lotus 10.6 will go for around $90-100k. Would be very easy to spend more than that to put Rite Off back together, especially if you have to find a new keel. Also a lot of work to rebuild the keel structure.

might be an idea while it is off to take to the local autoleccy for an overhaul

Agree about retaining heat, but the lagging does not form an airtight seal around the pipe. Corrosion occurs on the interior of an exhaust with the principal issue for SS pipes being acid formation attacking the welds. Regular grade 300 series SS should not be used in dry exhaust applications, at least not near the exhaust manifold, the exhaust gas temp circa 600deg is a critical temp for these grades as they undergo a phase change around 550 deg C with rapid loss of strength. Carbon steels are better or if the sky is the limit a suitable Inconel grade. By the way anyone with an old

actually it does not improve operation. In a normally aspirated engine all the action has already happened before the exhaust, in the case of a turbo charged motor whilst heat from the exhaust is good to drive the the turbo, it is bad for the turbo bearings and the oil system(the bearings live a hellish life) and the objective is to keep the charge air as cool as possible, there's a real compromise here to deal with - that's why you will see most turbo marine diesels (certainly the larger ones) with water cooled turbos and air after/intercoolers. Keeping the exhaust warm does help reduce

It will be some sort of high temperature insulating blanket eg https://www.bradfordinsulation.co.nz/commercial-and-industrial-insulation/fibertex-board-blanket/fibertex-820 - exhaust temp prior to water cooling is around 600deg C. The wire is to hold it in place.

I am sure you know Panuku does not own Westhaven any more, they are just the managers. It was transferred back to the council in some fishy deal to avoid tax. https://www.stuff.co.nz/auckland/110522994/auckland-council-plans-220m-tax-dodge

Typically backup - they have been available for quite a long time. I remember when Chay Blyth used to run his BT "Wrong way" around the world race they carried them as backup for starting their Perkins engines. Not sure if there is one available that works for JH Yanmars. Here is another supplier (Chinese) http://www.ipu-starting.com/products/spring-starters/

who will collectively come up with 3 dozen different opinions, all opinions heavily qualified but of course recommending on-going expensive investigations......😄😄

I don't know how big your mates launch is, but a 13.5m/45' launch will typically use around 130-150lph to achieve 27kts (an older Riv 48 is an eye watering 230lph!) referencing Len Gilbert/John Menzies test data, whilst I guess your "old girl" would have used 10-12lph. So on a liters/NM basis the launch is using about 3x what you would have used.

It is remarkable how obtuse the publicly available info about the extension is. All I can discover is that there will 113 new berths in the Pile redevelopment area (from a Panuku youtube), no mention of sizes. The Westhaven website takes you to a glossy lightweight document dated 2013 This was in Pacific Powerboat mag To help alleviate the shortage of pontoon berths, Westhaven Marina have plans to retire all the old pile moorings in favour of 84 new pontoon berths. The development will use existing marina water space more effectively and includes 40 x 20m, 39 x 24m and 5 x catamaran

Different market, I think they are all 20m+

and just for clarity, Standards have no legal standing in their own right. To be obligatory they must be specifically referenced in legislation, either in an Act or Regulations. Otherwise they are only advisory/for reference

AS 3004.2 does not include a similar statement. I have discussed this with the Electrical Inspector (Clive Cork, a fellow yachtie) who does our boats at Sandspit. He advises that it comes down to what the Electrical regulations state, and unless stated other wise the reference standard is for new instalations and not retrospective. He advised there is no retrospectivity clause for AS 3004.2. He said when he is inspecting a legacy installation he is ensuring that it is "safe" in his view. There is an anomaly between the regs and the standards, the Electrical (safety) regulations were enac

reminds me to read the text rather than just the file name of my extract 😄

Just curious with your "I also had to add another gas detector under the oven to comply." Did the gas fitter inform you that the prevailing standard :ASNZS 5601.2 is not retrospective for existing installations, per clause 1.3. His obligation under the standard (and the regulations which recognise the standard) is to ensure the work he did, ie replacing the hose, complied with the standard, no more than that. I have raised this with my insurer and they acknowledge that there is no obligation to upgrade old boats to the current standard. This is also going on with EWOF's, people

That's him, when I changed my engine and prop out in 2005, he bought the old controllable pitch prop from me and fitted it to the 12m Bakewell White design he built for himself

there was a guy down in Whakatane (or maybe Ohope) who built several Birdsall steelies, met him a couple of times can't remember his name.

Certainly honking, red is Tiri, medium blue is Channel Is, green Whangaparoa

Being a little pedantic, Gypsy Moth IV was designed by Illingworth and Primrose, Angus being very much the junior member of the partnership at the time. Chichester was very critical about the yacht, however Illingworth provides alot of detail in his fine book "Further Offshore" of all the requirements of Chichester's which lead to a rather compromised design. John Illingworth pushed UK offshore racing to a new level, and was an active campaigner with his Malham series of yachts. Myth of Malham won just about everything possible in her day in the northern hemisphere. He was also the instig

as an FYI Beta and Nanni use Twin Disc/Technodrive sail drives https://twindisc.com/marine-products/propulsion/saildrives/

I would suggest Whitsundays if you want lots of sailing, Fiji for the diving and cruising

There are bareboats available in Tonga (Vavau), New Caledonia and French Polynesia. I assume all the reefs around Fiji discourage bareboat chartering. The boats out of Vavau are getting pretty tired and appear to have alot of issues going by number of radio calls raising serious maintenance problems we heard from charterers to the base. Maybe think about a crewed charter in Fiji?

you could try Gordon at Craftmaster Marine (operates out of Yachspars shed in Kumeu), he might have a suitable prop in his collection

where does the pump sit relative to the waterline?