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Search: Posts Made By: CaptTom
Forum: Seamanship & Navigation   03-07-2013
Replies: 59
Views: 5,741
Posted By CaptTom
Re: Close call! Who had rights?

That's what I thought (see my previous post.) If I can be proven wrong I'll gladly stand corrected and chalk it up as a learning opportunity. But CapnBill, if you can point me to something in...
Forum: Cruising & Liveaboard Forum   02-05-2013
Replies: 18
Views: 2,793
Posted By CaptTom
Re: Flash Evaporation?

I was thinking of using heat from the jacket water, not the exhaust. You'd use the same two hoses that are used for an engine-sourced cabin or water heater.

Given the current draw of an RO...
Forum: Cruising & Liveaboard Forum   02-05-2013
Replies: 18
Views: 2,793
Posted By CaptTom
Re: Flash Evaporation?

Yes, that's one of the sites I looked at when researching this. It seems quite feasible, but I'm not sure how much energy it would take to get enough vacuum to boil water heated by the engine. I...
Forum: Cruising & Liveaboard Forum   01-31-2013
Replies: 18
Views: 2,793
Posted By CaptTom
Re: Flash Evaporation?

Thanks TwoD!

I was assuming most of the energy went into getting the pressure low enough that warm, engine-heated water would flash to steam. I'm taking a weather course, and right now we're...
Forum: Cruising & Liveaboard Forum   01-01-2013
Replies: 18
Views: 2,793
Posted By CaptTom
Re: Flash Evaporation?

Rich, thanks for the analysis. The HP required to pull sufficient vacuum was always the unknown in my calculations. Still, 10-12 HP? I know a car air conditioner compressor doesn't pull that much....
Forum: Cruising & Liveaboard Forum   01-01-2013
Replies: 18
Views: 2,793
Posted By CaptTom
Re: Flash Evaporation?

SansaBoat, I've read the web sites of a number of manufacturers of large units for commercial ships. The idea is pretty simple but yes, the details get complicated. This is just a thought...
Forum: Cruising & Liveaboard Forum   01-01-2013
Replies: 18
Views: 2,793
Posted By CaptTom
Re: Flash Evaporation?

I hadn't thought of an A/C compressor, that makes sense.

But what if you used a compressor out of a car, instead of a fridge? You could run it right off the engine, no 120V supply needed. They...
Forum: Cruising & Liveaboard Forum   01-01-2013
Replies: 18
Views: 2,793
Posted By CaptTom
Flash Evaporation?

The water filtration thread got me thinking:

I see a lot of reverse osmosis watermakers, but it's a very energy-intensive process. Why hasn't anyone invented a flash evaporation process for small...
Forum: Seamanship & Navigation   01-01-2013
Replies: 59
Views: 5,741
Posted By CaptTom
Re: Close call! Who had rights?

I have to agree with smurphny, and add the following:

The danger/doubt signal (5 or more short and rapid blasts) could be used a LOT more. You may get a hand signal in response, but at least...
Forum: General Discussion (sailing related)   12-09-2012
Replies: 33
Views: 5,890
Posted By CaptTom
Re: Winter under a tarp

I'm a little (all right, a lot) late to this thread. But I do have a lot of experience with both tarps and shrink wrap, so I'll share some lessons learned:

Shrink wrap is a great idea, but I've...
Forum: Seamanship & Navigation   12-05-2012
Replies: 15
Views: 4,851
Posted By CaptTom
Re: Boat Bondage!

A couple of things that, based on what I see at most docks, a lot of people don't seem to know. (1) A dock line that's held up fine for weeks during settled weather, can chafe through in a very...
Forum: Gear & Maintenance   11-19-2012
Replies: 91
Views: 7,732
Posted By CaptTom
Re: Battery Sizing - am I crazy?

Agreed. The advantages to the 6V GC batteries are high AH rating for their size and cost, full deep-cycle capability, a smaller footprint that gives you some mounting flexibility, and an easier job...
Forum: Cruising & Liveaboard Forum   11-13-2012
Replies: 89
Views: 6,524
Posted By CaptTom
Re: My Escape Plan - Insights Wanted

I appreciate all the different perspectives here, and the realities of the details.

I'm putting together the finances of my own plan, and I think I'm going to be OK, but my backup plan in case of...
Forum: General Discussion (sailing related)   11-03-2012
Replies: 14
Views: 1,272
Posted By CaptTom
Re: Winter is coming -Battery Question?

Some people insist that removing batteries and putting them somewhere with a stable temperature, but NOT on concrete, is the only answer. I used to do that. Now I leave the batteries in and top...
Forum: US Northeast   11-02-2012
Replies: 8
Views: 768
Posted By CaptTom
Re: Piscataqua River Dock & Dines

I'll give you another one, but there's a catch. You can reserve for lunch or dinner at the hotel on Star Island at the Isles of Shoals in season. It's family-style dining with slightly overpriced...
Forum: Seamanship & Navigation   11-01-2012
Replies: 59
Views: 5,741
Posted By CaptTom
Re: Close call! Who had rights?

The test is whether or not you are "operating mechanical propulsion". Engine on, you're a power-driven vessel. Doesn't matter what you have hanging from your sticks, or whether or not your...
Forum: Seamanship & Navigation   11-01-2012
Replies: 1
Views: 798
Posted By CaptTom
Re: Anyone join Club Jeppesen?

Very good experience with the company, they are easy to deal with.

Paying $89 a year for chart updates burns me up. But if your plotter uses CMap cards and you need the updates, that's the...
Forum: Seamanship & Navigation   11-01-2012
Replies: 53
Views: 4,323
Posted By CaptTom
Re: who had right away?

Good information, and good discussion.

Still, this is NOT the best place to seek information on Navigation Rules.

Go right to the rules. The book is cheap, and the web site is free. The rules...
Forum: Seamanship & Navigation   10-16-2012
Replies: 53
Views: 4,323
Posted By CaptTom
Re: who had right away?

This is a false statement.

You are correct that the lobster boat in this situation had no special privileges and was the give way vessel. She was legally obligated to stay well clear of the...
Forum: US Northeast   10-16-2012
Replies: 8
Views: 768
Posted By CaptTom
Re: Piscataqua River Dock & Dines

Well, not exactly 12 knots. I've personally clocked it at 4 in open water, in some spots it can run as much as 6. Hell gate is a cake walk compared to the Piscataqua. The one in NY, anyway. The...
Forum: US Northeast   10-14-2012
Replies: 8
Views: 768
Posted By CaptTom
Re: Piscataqua River Dock & Dines

Newick’s Lobster House

No. The only dock they have is posted as private for commercial fishermen to unload only.

Fresh Local Bayside

No dock. Maybe Great Bay Marina would let you pay...
Forum: Seamanship & Navigation   10-14-2012
Replies: 53
Views: 4,323
Posted By CaptTom
Re: who had right away?

First, neither vessel had "right of way". That only applies downbound on the Western rivers. Read the NavRules.

Second, a lobster boat underway between traps is not, per the rules, a "fishing...
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