Diamond Island photos

Rattlesnake Guy · 09-29-2009, 09:43 PM

Quote:

Originally Posted by sa meredith

It looks like the aluminum was secured to cinder blocks by rope and sunk intentionally. So, I would think, eventually the rope will let go, and the aluminum will float to the surface, creating a wonderful surprise for an unsuspecting boater.
Is this the case?

Must be that super light weight aluminum that floats.

sa meredith · 09-30-2009, 10:15 AM

Quote:

Originally Posted by Rattlesnake Guy

Must be that super light weight aluminum that floats.

Whoops. I'll wear the dunce cap today.

jmen24 · 09-30-2009, 10:31 AM

Quote:

Originally Posted by sa meredith

Whoops. I'll wear the dunce cap today.

Apparently I will join you

Rattlesnake Gal · 09-30-2009, 02:29 PM

What also floats in water? Rain, apples, very small rocks...

Thanks for the laugh guys.

Thanks for sharing these Diamond Island underwater photos with us Diver1111, they are very interesting. Hopefully someone here will be able to unravel the mystery.

BroadHopper · 09-30-2009, 04:36 PM

I remember diving in the area off of the big boathouse on the NW corner of Diamond Island. I remember a miniature underwater railroad track with wires running down the middle. There were braces here and there sticking up out of the silt. I can't recall the aluminum ducts or the refrigerator.

The Navy and MIT were doing underwater testing in the '50's. It was classified, so that is all I know.

ApS · 10-01-2009, 03:29 AM

Quote:

Originally Posted by BroadHopper

I remember diving in the area off of the big boathouse on the NW corner of Diamond Island. I remember a miniature underwater railroad track with wires running down the middle. There were braces here and there sticking up out of the silt. I can't recall the aluminum ducts or the refrigerator...The Navy and MIT were doing underwater testing in the '50's. It was classified, so that is all I know.

That testing was of laser technology and was done at night. This thread is the first reference I can recall to ductwork and a refrigerator in that area. (The refrigerator may be unrelated—it could have floated in).

Quote:

Originally Posted by Rattlesnake Guy

Must be that super light weight aluminum that floats.

1) Boats unfortunate enough to be made of aluminum will sink.

I saw that on the Internet somewhere.

2)

Maybe all those 100' stretches of aluminum pipe are to move silt-laden water away that would stirred up by the activity in the area. (?)

Running air bubbles through it would create the necessary current. Weights spaced at strategic locations would be needed to keep the ductwork functioning.

Grant · 10-16-2009, 01:33 PM

I've seen that aluminum tubing down there -- lots of it. Weird. I always just assumed it was more junk left over from the Navy stint. Great photos!

Rattlesnake Guy · 10-16-2009, 09:55 PM

Been thinking about what possible use the pipes could have and have a theory. If you were doing a bunch of laser experiments in the lake which required darkness and you were looking to extend your available hours for the research, couldn't you place a bunch of tubes end to end on cinder blocks to simulate dark conditions during the day?

09-30-2009, 02:29 PM	#4
Rattlesnake Gal Senior Member Join Date: Nov 2003 Location: Central NH Posts: 5,252 Blog Entries: 1 Thanks: 1,451 Thanked 1,349 Times in 475 Posts	Rotfl! What also floats in water? Rain, apples, very small rocks... Thanks for the laugh guys. Thanks for sharing these Diamond Island underwater photos with us Diver1111, they are very interesting. Hopefully someone here will be able to unravel the mystery.

09-30-2009, 04:36 PM	#5
BroadHopper Senior Member Join Date: Oct 2004 Location: Laconia NH Posts: 5,571 Thanks: 3,207 Thanked 1,101 Times in 793 Posts	late '60's early '70's I remember diving in the area off of the big boathouse on the NW corner of Diamond Island. I remember a miniature underwater railroad track with wires running down the middle. There were braces here and there sticking up out of the silt. I can't recall the aluminum ducts or the refrigerator. The Navy and MIT were doing underwater testing in the '50's. It was classified, so that is all I know. __________________ Someday may never be an actual day.

10-16-2009, 01:33 PM	#7
Grant Senior Member Join Date: Jul 2002 Location: Pennsyltuckey, Tuftonboro, Moultonborough Posts: 1,500 Thanks: 375 Thanked 230 Times in 124 Posts	I've seen that aluminum tubing down there -- lots of it. Weird. I always just assumed it was more junk left over from the Navy stint. Great photos! __________________ "When I die, please don't let my wife sell my dive gear for what I told her I paid for it."

10-16-2009, 09:55 PM	#8
Rattlesnake Guy Senior Member Join Date: Sep 2004 Posts: 1,254 Thanks: 423 Thanked 366 Times in 175 Posts	My Guess Been thinking about what possible use the pipes could have and have a theory. If you were doing a bunch of laser experiments in the lake which required darkness and you were looking to extend your available hours for the research, couldn't you place a bunch of tubes end to end on cinder blocks to simulate dark conditions during the day?