Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-11-2017, 11:07 AM   #4301
Art
Guru
 
Art's Avatar
 
City: SF Bay Area
Vessel Model: Tollycraft 34' Tri Cabin
Join Date: Feb 2011
Posts: 12,569
Quote:
Originally Posted by QB View Post
No kidding. From the capsize test video, it has positive stability at any angle of roll.

Love it!

Often wondered... Regarding "real world" practical operations when out to sea and full rollover happens once or more times due to conditions: What happens to oil in engine when it's still running yet being upside down for short period of time[s]??
Art is offline   Reply With Quote
Old 07-11-2017, 11:12 AM   #4302
Guru
 
ben2go's Avatar
 
City: Upstate,SC
Vessel Name: Shipoopi
Vessel Model: derilic sailboat
Join Date: May 2012
Posts: 2,884
Quote:
Originally Posted by Art View Post
Love it!

Often wondered... Regarding "real world" practical operations when out to sea and full rollover happens once or more times due to conditions: What happens to oil in engine when it's still running yet being upside down for short period of time[s]??
I'd like to know as well. Other than that, it seems like a good around the world M/V.
__________________
This is my signature line. There are many like it but this one is mine.

What a pain in the transom.

ben2go is offline   Reply With Quote
Old 07-11-2017, 04:00 PM   #4303
Curmudgeon
 
BaltimoreLurker's Avatar
 
City: Stoney Creek, MD
Vessel Name: Moon Dance
Vessel Model: 1974 34' Marine Trader Sedan
Join Date: Oct 2007
Posts: 2,775
Quote:
Originally Posted by Art View Post
Love it!

Often wondered... Regarding "real world" practical operations when out to sea and full rollover happens once or more times due to conditions: What happens to oil in engine when it's still running yet being upside down for short period of time[s]??

Is that what a dry sump oiling system addresses?
BaltimoreLurker is offline   Reply With Quote
Old 07-11-2017, 05:29 PM   #4304
Guru
 
AusCan's Avatar
 
City: Adelaide
Vessel Name: Kokanee
Vessel Model: Cuddles 30 Pilot House Motor Sailer
Join Date: Jul 2012
Posts: 3,218
Quote:
Originally Posted by Art View Post
Love it!

Often wondered... Regarding "real world" practical operations when out to sea and full rollover happens once or more times due to conditions: What happens to oil in engine when it's still running yet being upside down for short period of time[s]??
I'd expect they would run a dry sump with a separate oil reservoir large enough to supply lubrication for the time period the boat is may be inverted.
This would also help in rough seas when upright. The crankshaft isn't contacting a pool of oil losing efficiency and causing frothing of the oil.
AusCan is offline   Reply With Quote
Old 07-12-2017, 03:23 PM   #4305
Guru
 
ben2go's Avatar
 
City: Upstate,SC
Vessel Name: Shipoopi
Vessel Model: derilic sailboat
Join Date: May 2012
Posts: 2,884
Quote:
Originally Posted by BaltimoreLurker View Post
Is that what a dry sump oiling system addresses?
It could.

https://en.wikipedia.org/wiki/Dry_sump
__________________
This is my signature line. There are many like it but this one is mine.

What a pain in the transom.

ben2go is offline   Reply With Quote
Old 07-12-2017, 04:13 PM   #4306
Art
Guru
 
Art's Avatar
 
City: SF Bay Area
Vessel Model: Tollycraft 34' Tri Cabin
Join Date: Feb 2011
Posts: 12,569
Quote:
Originally Posted by ben2go View Post
Upon first word glance and quick look at drawing seems that 180 degree inversion of engine had better not be for long... at all. I missing something??
Art is offline   Reply With Quote
Old 07-12-2017, 04:24 PM   #4307
Guru
 
City: Melbourne, FL
Join Date: Dec 2014
Posts: 1,730
Running inverted won't help an engine but it won't kill it either. We had a tractor that ran all the fuel out of the dual fuel filters before it stopped, probably 45 minutes upside down at 1800 RPM and no damage to the engine. The sheet metal was messed up, as expected but the engine was still good to go. We tore it down and found that the cylinder hone marks were still fresh as they are new, even though it had 1000 hours on it.

The real problem with a true inversion would be that they would need 360 degree fuel pickups or it will get air in the lines during the inversion. Once you get the fuel run through the filters, you would get a slug of air to get out of the fuel lines and that could take some cranking. In craft that expect knockdowns or inverted flights, they have a weighted end on the fuel pickup with flexible hose so the weight will follow the fuel, and keep air out of the lines. One would wonder if they thought of that.

Thunder Child was in Fort Lauderdale International Boat Show, and was ahead of Kadey Krogen, If I remember correctly... May be a sturdy boat but not easy on the eyes.
stubones99 is offline   Reply With Quote
Old 07-12-2017, 04:37 PM   #4308
Guru
 
Benthic2's Avatar
 
City: Boston Area
Join Date: Feb 2017
Posts: 2,603
Who is the intended audience for Thunder Child. I'm assuming that's not for sale to the general public, just military/rescue/government types, no?
Benthic2 is offline   Reply With Quote
Old 07-12-2017, 05:46 PM   #4309
Art
Guru
 
Art's Avatar
 
City: SF Bay Area
Vessel Model: Tollycraft 34' Tri Cabin
Join Date: Feb 2011
Posts: 12,569
Quote:
Originally Posted by stubones99 View Post
Running inverted won't help an engine but it won't kill it either. We had a tractor that ran all the fuel out of the dual fuel filters before it stopped, probably 45 minutes upside down at 1800 RPM and no damage to the engine. The sheet metal was messed up, as expected but the engine was still good to go. We tore it down and found that the cylinder hone marks were still fresh as they are new, even though it had 1000 hours on it.

The real problem with a true inversion would be that they would need 360 degree fuel pickups or it will get air in the lines during the inversion. Once you get the fuel run through the filters, you would get a slug of air to get out of the fuel lines and that could take some cranking. In craft that expect knockdowns or inverted flights, they have a weighted end on the fuel pickup with flexible hose so the weight will follow the fuel, and keep air out of the lines. One would wonder if they thought of that.

Thunder Child was in Fort Lauderdale International Boat Show, and was ahead of Kadey Krogen, If I remember correctly... May be a sturdy boat but not easy on the eyes.
Wonder what oil and fuel set ups work for propped, combustion engine little planes as they perform tricks doing barrel rolls?? They did those all the way back into the fairly early 1900's.
Art is offline   Reply With Quote
Old 07-12-2017, 06:17 PM   #4310
Senior Member
 
Great Laker's Avatar
 
City: Spring Lake, MI
Vessel Name: Great Laker
Vessel Model: American Tug 34
Join Date: Jan 2011
Posts: 346
Bay Weld Custom Aluminum Trawler

We are cruising and currently docked in Fish Creek on the Door County Peninsula between Green Bay and Lake MI. Walking the docks, I discovered this unusual aluminum trawler styled work boat and spent some time talking to the owner.

It is a 30 ft Bay Weld made in Flower, Alaska, and was custom built as a private owner’s fishing boat. A young man bought the boat from the owner, who was getting too old to use it, and had it shipped here. He uses it to ferry supplies to and from his summer home on an offshore island. He says it is the only Bay Weld he is aware of on the Great Lakes.

I assume that some of you in the NW may have run across these, especially if you have been as far north as Alaska?
Attached Thumbnails
IMG_1422.jpg   IMG_1421.jpg   IMG_1419.jpg   IMG_1418.jpg   IMG_1425.jpg  

IMG_1426.jpg   IMG_1427.jpg  
__________________
Larry
American Tug 34 - Great Laker, and Gold Looper
Home port on the vast unsalted Lake Michigan
adventuresofgreatlaker.blogspot.com
Great Laker is offline   Reply With Quote
Old 07-12-2017, 08:28 PM   #4311
Guru
 
ben2go's Avatar
 
City: Upstate,SC
Vessel Name: Shipoopi
Vessel Model: derilic sailboat
Join Date: May 2012
Posts: 2,884
Quote:
Originally Posted by Art View Post
Upon first word glance and quick look at drawing seems that 180 degree inversion of engine had better not be for long... at all. I missing something??
From what I remember from my aviation days, the tank(s) have compartments with weighted trap doors inside. As the plane rolls, the oil is trapped in a small compartment inside the oil tank at the pick up. The same kind of deal happens in the fuel tanks, except the pick up is weighted and flips over as the tank rolls upside down with the aircraft. They are called flop tubes.

Inverted fuel systems
https://stab-iitb.org/newton-mirror/...9/eng99417.htm

Inverted oil systems.
https://ravenaircraft.com/products2/...ed-oil-system/

This goes inside the tank and flops around with in the fuel. Could be used with oil, I would think.
__________________
This is my signature line. There are many like it but this one is mine.

What a pain in the transom.

ben2go is offline   Reply With Quote
Old 07-15-2017, 04:02 PM   #4312
Guru
 
MurrayM's Avatar
 
City: Kitimat, North Coast BC
Vessel Name: Badger
Vessel Model: 30' Sundowner Tug
Join Date: Jul 2012
Posts: 5,946
77' aluminum trimaran motorsailer;

https://moreboats.com/boats/custom/m...id-rd-24/87560
__________________
"The most interesting path between two points is not a straight line" MurrayM
MurrayM is offline   Reply With Quote
Old 07-15-2017, 05:09 PM   #4313
Art
Guru
 
Art's Avatar
 
City: SF Bay Area
Vessel Model: Tollycraft 34' Tri Cabin
Join Date: Feb 2011
Posts: 12,569
Quote:
Originally Posted by MurrayM View Post
Unique!
Art is offline   Reply With Quote
Old 07-15-2017, 05:33 PM   #4314
Guru
 
City: Galveston, Texas
Vessel Model: 24" El Pescador
Join Date: Nov 2014
Posts: 741
That is a very common design for boats 25 to 35' in the PNW. Bay weld is one of the manufacturers. Some have outboards, I/O's and even diesel inboards. They have them set up for fishing, nature tours and ferrying around work crews and other miscellaneous things.

They seem very robust and the heated cabin and head makes it comfortable for a day trip.

Other configurations are available for people who want to spend more time on the boat.
__________________
Ken Diestler
Galveston, Tx
ktdtx is offline   Reply With Quote
Old 07-17-2017, 05:34 AM   #4315
Guru
 
Lou_tribal's Avatar
 
City: Quebec
Vessel Name: Bleuvet
Vessel Model: Custom Built
Join Date: Jan 2016
Posts: 4,372
I would be interested to see its slip. Would not fit in any slip of my marina for sure.

L.
Lou_tribal is offline   Reply With Quote
Old 07-17-2017, 05:51 AM   #4316
Guru
 
City: Sydney
Join Date: Jul 2015
Posts: 1,646
Quote:
Originally Posted by MurrayM View Post



I always wonder when I see such a boat if the original owner /builder ever considered how difficult it will be to sell a orphan and weather they would have done things different it not at all
gaston is offline   Reply With Quote
Old 07-17-2017, 12:34 PM   #4317
Member
 
KellyBall's Avatar
 
City: Los Angeles
Join Date: Jul 2017
Posts: 5
Quote:
Originally Posted by Great Laker View Post
We are cruising and currently docked in Fish Creek on the Door County Peninsula between Green Bay and Lake MI. Walking the docks, I discovered this unusual aluminum trawler styled work boat and spent some time talking to the owner.

It is a 30 ft Bay Weld made in Flower, Alaska, and was custom built as a private owner’s fishing boat. A young man bought the boat from the owner, who was getting too old to use it, and had it shipped here. He uses it to ferry supplies to and from his summer home on an offshore island. He says it is the only Bay Weld he is aware of on the Great Lakes.

I assume that some of you in the NW may have run across these, especially if you have been as far north as Alaska?
Yes it is great!
KellyBall is offline   Reply With Quote
Old 07-17-2017, 11:32 PM   #4318
dvd
Senior Member
 
dvd's Avatar
 
City: California Bay Area
Vessel Name: BOOSTER
Vessel Model: Nordic Tug 37
Join Date: Feb 2011
Posts: 362
A couple of nice boats anchored here in Pruth Bay, Northern Coast BC, tonight.
Love the North Sea hull on that motorsailer - must have been made in Great Britain by the looks of her.

Don't recognize the trawler, but nice lines & layout.
Attached Thumbnails
MS.jpg   Trawl.jpg  
dvd is offline   Reply With Quote
Old 07-17-2017, 11:43 PM   #4319
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,737
dvd,
The North Sea is nice yes.
But the other trawler is about the ugliest trawler ever posted here. Should have good visability though and a boat w good vis isn't all bad to be sure. Oh and I love that style of FB. May be good things below the WL too.
__________________
Eric

North Western Washington State USA
Nomad Willy is offline   Reply With Quote
Old 07-18-2017, 12:38 AM   #4320
Guru
 
Conrad's Avatar
 
City: Campbell River
Vessel Name: Blue Sky
Vessel Model: Nordic Tugs 42 Hull #001
Join Date: Oct 2007
Posts: 1,972
Quote:
Originally Posted by dvd View Post
A couple of nice boats anchored here in Pruth Bay, Northern Coast BC, tonight.
Love the North Sea hull on that motorsailer - must have been made in Great Britain by the looks of her.

Don't recognize the trawler, but nice lines & layout.
The motorsailor looks like a Nauticat built in Finland.
__________________
Conrad
Berthed in
Campbell River BC
Conrad is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 01:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012