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Search: Posts Made By: jjjacq
Forum: Emergency, Disaster and Distress 31-07-2020, 16:30
Replies: 65
Views: 4,031
Posted By jjjacq
Re: Helicopter Rescue, what would be acceptable to take from board?

Like Brassens used to sing: "Sauve qui peut le vin et le Pastis d'abord!"
Forum: Anchoring & Mooring 24-07-2020, 12:58
Replies: 135
Views: 9,647
Posted By jjjacq
Re: How much chain..really?

dyneema has no elasticity so it's not really a good idea. Nylon or polypropylene is ok.
Forum: Off Topic Forum 03-07-2020, 18:47
Replies: 100
Views: 5,114
Posted By jjjacq
Re: Celebrity Sailors--Who would you have liked to Sail with

Humphey Bogart
Albert Einstein
Eric Tabarly
Sam Davies
Forum: General Sailing Forum 12-06-2020, 22:13
Replies: 302
Views: 16,355
Posted By jjjacq
Re: Religious Commercial or Political Personal Signal Flags at Marina slip

What's wrong with pirate flags? That's clear discrimination against pirates. William Dampier is mightily upset and turning in his grave!
Forum: Electrical: Batteries, Generators & Solar 13-04-2020, 16:25
Replies: 37
Views: 2,361
Posted By jjjacq
Re: Charging 4 Battery Banks

I'm not sure what kind of material your cable is made of, but with copper, a cable (2 cores), 95mm2 /12 m long has a resistance of 0.0043 ohms, so for 100 A the voltage drop in the cable is only...
Forum: COVID-19 | Containment Area 13-04-2020, 15:41
Replies: 184
Views: 22,381
Posted By jjjacq
Re: Will boat prices fall because of Covid

The simple answer is I don't know. What I think will happen (or is happening right now) is governments will start printing money to bail out the economy.

Normally, printing out money is a bad...
Forum: General Sailing Forum 17-02-2020, 12:09
Replies: 41
Views: 4,279
Posted By jjjacq
Re: Bernard Moitessier Rounds Cape Horn

No, she is at La Rochelle, France. At the maritime museum. Still red, still floating, a few bumps still evident on the hull.
Forum: Navigation 03-01-2020, 16:26
Replies: 58
Views: 5,392
Posted By jjjacq
Re: Online celestial navigation courses?

You can use my web site: https://www.madinstro.net/sundry/navig.html

Item 5 gives you a bunch of calculators, even a general sun almanach (without the nutation correction but good enough to within...
Forum: Engines and Propulsion Systems 27-12-2019, 11:18
Replies: 62
Views: 4,721
Posted By jjjacq
Re: How stop these fittings from leaking

I have always been told that the thinner the gasket, the easier it is to seal!
Forum: Multihull Sailboats 16-12-2019, 11:22
Replies: 179
Views: 22,231
Posted By jjjacq
Re: Helia 44 abandoned off Puerto Rico

The balloons, when deflated, have zero volume, they can be below the floor boards. The bottle need not be bigger than a diver's air bottle. When inflated, there is no water ingress, no matter how big...
Forum: Multihull Sailboats 16-12-2019, 11:04
Replies: 179
Views: 22,231
Posted By jjjacq
Re: Helia 44 abandoned off Puerto Rico

Rather than trying to make separate water tight compartments, I wonder if anyone has thought of simply inflating bladders (say weather balloons like) with simply compressed air bottles. The hull is...
Forum: Electrical: Batteries, Generators & Solar 15-09-2019, 04:24
Replies: 67
Views: 6,397
Posted By jjjacq
Re: Plugging a 120v boat into 240v

That's not true, for 240 V you have one hot wire and a neutral. At least that's the way it is in Australia. 415V is where you have two (or three) hot wires (both/all at 240V from neutral).

Be...
Forum: Engines and Propulsion Systems 13-05-2019, 08:53
Replies: 46
Views: 5,882
Posted By jjjacq
Re: Transparent diesel safe fuel hose?

I use a teflon hose as a level gauge. It is certainly resistant to diesel, it does not become yellow or lose transparency, but it is not very flexible and some sealant is required at the joints to...
Forum: Seamanship & Boat Handling 15-02-2019, 17:22
Replies: 24
Views: 8,463
Posted By jjjacq
Re: Reefing the Jib Instead of the Main?

I almost never use my No 1, for a start it's a real pain trying to flake it on deck single handed. So it's No2 or No3 and the funny thing is when the wind is 10 to 15 knots, there's barely any...
Forum: Seamanship & Boat Handling 27-08-2018, 15:58
Replies: 37
Views: 9,397
Posted By jjjacq
Re: A simple approach to picking up moorings

I use much the same with this 2 part item (one part is fixed to one of my boat hooks) https://www.whitworths.com.au/stainless-steel-mooring-hook-and-launcher-170mm, the spring locks under the lip of...
Forum: OpenCPN 24-08-2018, 22:06
Replies: 3
Views: 813
Posted By jjjacq
Re: OpenCPN complete newbie

For New-Zealand, all their charts are available for free for OpenCPN, I have the set. Not so lucky for Australia. They make their charts available (for a very expensive price) as GeoTIFF which is a...
Forum: Electrical: Batteries, Generators & Solar 03-08-2018, 21:46
Replies: 69
Views: 10,381
Posted By jjjacq
Re: Stray current in marina

I agree, but it remains possible that some of the current will pass through the 3rd boat. It can be easy to measure, just disconnect the wire from one anode and place a meter between it and the other...
Forum: Electrical: Batteries, Generators & Solar 03-08-2018, 21:05
Replies: 69
Views: 10,381
Posted By jjjacq
Re: Stray current in marina

I agree, boat 1 and boat 3 need to be connected to shore power but boat 2 can be isolated, just sitting in the the path of the circuit. The current will always take the path of least resistance.
Forum: Electrical: Batteries, Generators & Solar 03-08-2018, 17:40
Replies: 69
Views: 10,381
Posted By jjjacq
Re: Stray current in marina

That's not quite correct, I can imagine a scenario with 3 boats, one, incorrectly wired injecting a DC current into the marina, the 2nd not connected to anyting, and the 3rd connected to shore earth....
Forum: OpenCPN 17-11-2017, 19:16
Replies: 5
Views: 910
Posted By jjjacq
Re: Opencpn does not work on Kubuntu/Ubuntu 16.04.3 LTS

Hi Pavel,

/usr/local/bin/opencpn

Ok, that's the problem, my path looks at /usr/local/bin/ before it looks at /usr/bin/ and there is an old opencpn from 2013 by the time stamp that I must have...
Forum: OpenCPN 17-11-2017, 10:41
Replies: 5
Views: 910
Posted By jjjacq
Re: Opencpn does not work on Kubuntu/Ubuntu 16.04.3 LTS

Hi Pavel,

Here is the output:

opencpn/xenial,now 4.8.0-0~xenial1 amd64 [installed]
opencpn-doc/xenial,xenial,now 4.1.1329.1-0~wily1 all [installed,automatic]...
Forum: OpenCPN 16-11-2017, 20:15
Replies: 5
Views: 910
Posted By jjjacq
Opencpn does not work on Kubuntu/Ubuntu 16.04.3 LTS

I installed opencpn 4.8.0, following all the steps in the manual, adding the PPA repository, then doing the update then the opencpn install etc.
Everything seemed to work correctly, but when I try...
Showing results 1 to 22 of 22

 
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