From member-forum at psubs.org Mon May 5 08:09:09 2014 From: member-forum at psubs.org (via Member-Forum) Date: Mon, 5 May 2014 08:09:09 -0400 (EDT) Subject: [Member-Forum] [PSUBS-MAILIST] Terminating a conical transition Message-ID: <885dd.26714a5b.4098d965@aol.com> Joe, I was once talking with an engineer for a defense contractor and admitted that sometimes I did things backwards by making something in the shop first and then drawing it up. He grinned and said, "Yeah, you'd be surprised how often we do that, too." Jim In a message dated 5/5/2014 6:23:37 A.M. Central Daylight Time, personal_submersibles at psubs.org writes: Jim, I had not seen that particular spreadsheet, thank you! I do have the advantage of software that will accurately calculate weights and balances based on materials and position within the model. But, I have to get the broad strokes done first to do some fine tweaking later. In the past, all this was done on paper and then trial and error in practice. Joe On Sunday, May 4, 2014 9:09 PM, via Personal_Submersibles wrote: Joe, Per ABS, the CB must be at least 2" above the CG when submerged. It must still be at least 1" above in the event the drop weight is released. When I was considering auxiliary saddle tanks I planned to position them so the tops were even with the water line when all tanks were blown. My thinking was to gain the maximum freeboard available since any portion of the tanks above the water line contributes nothing to buoyancy. However Alec very correctly pointed out that the portion above the water line functions as reserve buoyancy to counteract roll when that side of the boat is depressed such as when someone steps on that tank. The CG/CB spreadsheet that Cliff developed is on the Psubs website. It's an excellent design tool. If you aren't already using it: Psubs/org>Resources & Reference>Design Tools. "Ballast & Buoyancy Control" is on the menu at the left side. Once you open the spreadsheet, choose the tab at the bottom labeled "Instructions." Best regards, Jim In a message dated 5/4/2014 4:54:05 P.M. Central Daylight Time, personal_submersibles at psubs.org writes: Hank, Most boats see about 100 hours use a year. I expect this to be no different. I want a neat little toy to play with in the garage on the occasions when my wife turns me loose! :) This is why I want to section the hull,...and I just convinced myself to shorten the thing a bit! Joe On Sunday, May 4, 2014 5:45 PM, hank pronk via Personal_Submersibles wrote: Joe, Sounds like you need to have the longest cones possible at each end to reduce the size of the free flooded areas. Another option is to change the design, decide what your priorities are. What is most important? if long transits are the plan then you may need to change things. If fuel cost is a consideration, another change. Looking very cool dock side, you nailed it. It just wouldn't be fun if it was easy. Hank -------------------------------------------- On Sun, 5/4/14, Joe Perkel via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > wrote: Subject: Re: [PSUBS-MAILIST] Terminating a conical transition To: "Personal Submersibles General Discussion" <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > Received: Sunday, May 4, 2014, 5:30 PM Sean, Have you ever notice how the Civil War design of the USS Alligator stabilized the boat submerged? A couple of crazy little tethered floats, but the rationale has never escaped me. I will reduce free flood space wherever I can. Trapped inertia being on my mind, but I needed someone to remind me of the waste in efficiency / power requirements, thanks! Also, your comments bring home some compelling reasons to shorten the design with a "Just enough but no more" design mindset. I've given thought to the conical section in the front, I can reduce this down to a 30" head with forward viewing ala Kraka, but quite the tight fit! Not sure, I have to give it some more thought. If I reduce the aft end with a cone, then I would bring the motor inside and do a standard marine hybrid installation. Expensive, but certainly a more reliable answer. If I do that, I would dispense with the notion of propulsion units in the aft end of the pods, truly no need then. This boat requires a massive ventilation / climate control scheme for surface operations, that's why I've been overly generous with the machinery space in these early drafts. I'm still concerned about stability because I have to contend with what to do with all of that centerline space. The VBT would take up some, but I would have to flood the rest. Thanks again Sean! Joe On Sunday, May 4, 2014 4:56 PM, Joe Perkel via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > wrote: Hank, What you see there is the original Seehund arrangement, my intention is as you say, up higher. The aft cone on mine essentially now an MBT. Those lower volumes will be flooded in practice, but I am wondering if they could be blown down dry to help with trailer launching and recovery?? Plenty, and I mean plenty of room along the centerline for keel ballast. I keep thinking about what you've told me regarding Gammas attachment, always in the back of my mind! Thanks Hank! Joe On Sunday, May 4, 2014 4:34 PM, hank pronk via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > wrote: Joe, Your dive tanks are to low, they should be at the top of the sub. The way you have it will be less stable. The motor pod should be okay, just like the K subs. You do not want your torpedo's to be buoyant, they should be as heavy as possible for stability. Hank -------------------------------------------- On Sun, 5/4/14, Joe Perkel via Personal_Submersibles <_ personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > wrote: Subject: Re: [PSUBS-MAILIST] Terminating a conical transition To: "Personal Submersibles General Discussion" <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > Received: Sunday, May 4, 2014, 3:07 PM I've incorporated some of the suggestions in the attached drawing. Still, I've got a lot to think about here but I am also excited about the possibilities and the potential outcome. This image should give some idea of what's on my mind. What you see is the water ballast arrangement on the original Seehund, and how my proposed pressure boundary fits into this scaled down version. The following is a list of concerns and or design considerations. 1) Clearly, I have no need to compensate for the loss of torpedoes 2) New pressure boundary provides for massive MBT volumes (Low pressure compressor to blow down volumes) 3) Torpedo battery pods may need to incorporate some free flooding spaces to reduce weight, or perhaps reduce battery capacity to a single pod in lieu of the former forward water ballast tank, then completely free flood both torpedoes completely??. (Boat will incorporate a gen-set) 4) Questionable reliability of external motor pod assembly. 5) Stability considerations Thanks for the input gents, It really helps me to take a step back on occasion! Joe On Sunday, May 4, 2014 10:19 AM, hank pronk via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > wrote: Joe, When I mounted the tanks back on Gamma, I changed the mounting location to give a greater angle also I did what Vance is saying on a small scale. I then poured a gallon of paint in each tank and rolled the sub slowly to ensure there was complete paint coverage. If I was operating in salt water I would mount some nipples to the tanks with plugs. After a dive in salt water, remove the plug and you have access to spray fresh water inside and rinse the salt water out. A large panel is a good idea also because you can open it up after each dive and let it dry out. If I had a K350, I would not copy the Nekton tanks exactly. I would change the shape so they have more volume at the top reducing the rolling effect. Also I would consider making them from SS. Also SS heads solves the problems entirely. Start watching ebay for ss heads. I once saw a ss tank exactly the same as a 500gal propane tank for 1,500 dollars on ebay. Hank -------------------------------------------- On Sun, 5/4/14, via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > wrote: Subject: Re: [PSUBS-MAILIST] Terminating a conical transition To: _personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) Received: Sunday, May 4, 2014, 8:32 AM Joe, Consider using an elliptical head back there, for starters. You aren't building for much depth here, so the K-350 size will be fine (.375" ish). The ellipses are cheaper, do the same job, and give you a touch more inside room. Then I would have a cone rolled with a short flange on the major diameter, maybe a couple of inches, to match the hull OD. The Nekton cone-to-dome caused a pinch point that was always a hassle to clean and paint, and ultimately left some pitting in the pressure hull that had to be weld-repaired. A short cylinder on the sheet metal would give you a little more room under there to sandblast and paint during assembly and later for overhauls. I would say for maintenance a couple of flush-mount, gasketed panels in the tank would serve you well. Don't make them too ornery to remove or you won't do it as often as you will wish you had. I'm wondering now about my own boat and using tanks like that. Is there anyone in the group who can plug and chug a metacentric height on Nekton tanks installed on a K-350? Assembly would be so simple that way. And it would tow better, which is always a good thing. The Nektons roll a bit, but are reasonably stable. A K with the pods should have plenty of weight down low. Hmm. Would it work? I'm thinking yes. Anybody else have an opinion on that? Vance -----Original Message----- From: Joe Perkel via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > To: personal_submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > Sent: Sun, May 4, 2014 12:28 am Subject: Re: [PSUBS-MAILIST] Terminating a conical transition Vance, Rethinking that aft assembly to make it all soft tanks aft of a hemi head ala Nekton. If I go weld-on to the head ala Nekton, how best to attach to the head to allow for periodic access and maintenance? Joe Sent from Yahoo Mail for iPad From: via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) >; To: <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) >; Subject: Re: [PSUBS-MAILIST] Terminating a conical transition Sent: Sat, May 3, 2014 2:03:36 PM Joe, It seems like an expensive and complex assembly for what you get. Why not close the aft segment in a simpler way and fair the stern to the shape you prefer? A hemisphere with an extended shaft housing to put the prop where you want it, for instance. Vance -----Original Message----- From: Joe Perkel via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > To: Personal Submersibles General Discussion <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > Sent: Sat, May 3, 2014 8:17 am Subject: Re: [PSUBS-MAILIST] Terminating a conical transition Sean, Yes, a bolted flange with O ring. I've attached an image of what's on my mind. This hull is 36" OD, cylinder length is 120". Anything bigger in diameter, simply gets way to big and bulky for handling. I'm thinking at this size, I must bolt at least two hull sections together for outfitting and maintenance, and the cones can be un-stiffened or perhaps only at the joints. Joe On Friday, May 2, 2014 9:50 PM, Sean T. Stevenson via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > wrote: Each cone section in that case is considered alone, so if you were using stiffeners, you would need a heavy stiffener at every joint. Depending on the size, it may be simpler to use unstiffened geometry for such an assembly. The rules do not address bolting pressure hull sections together, but I don't see why you couldn't, provided you meet the requirements in terms of the stress analysis under the maximum combined loading conditions, which are prescribed in the ABS rules. Might require some FEA to be sure. You're thinking an O-ring groove seal? Or other arrangement? I think an ASME code compliant flange would be a good place to start, but I would make sure that the cross-sectional area of each half of the flange considered individually met the requirements of a heavy stiffener per ABS, at a minimum material location (bolt hole). I would also be inclined to use SuperBolts for the connection. http://www.nord-lock.com/superbolt/multi-jackbolt-tensioners/ Sean On May 2, 2014 6:03:21 PM MDT, Joe Perkel via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > wrote: Sean, Would the heavy stiffener rule apply equally to several cone segments stepping down at different angles? Also, do ASME pipe flange specifications translate equally to bolted pressure hull sections? Have I missed a section somewhere on bolted cylindrical sections? Very helpful Sean thank you! Joe Sent from Yahoo Mail for iPad From: Sean T. Stevenson via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) >; To: Personal Submersibles General Discussion <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) >; Subject: Re: [PSUBS-MAILIST] Terminating a conical transition Sent: Fri, May 2, 2014 11:45:11 PM 2:1 semi-elliptical heads are usually fabricated with some length of straight flange (tangential cylindrical section) beyond the axis of the ellipse. Hemispherical heads may or may not have a straight flange section, but in either case are permissible to use adjacent to conical sections, provided all other requirements are met. For stiffened cones, you must have stiffeners meeting the "heavy stiffener" criteria at both ends, as close as practicable to the cone-to-cylinder and cone-to-head transitions. For unstiffened cones, the length L_c used in overall buckling calculations must be the total length between the next heavy stiffener to either side of the entire compartment length, or between the 40% of head depth points if otherwise unbounded. Cone to head welds are done in the same manner as cone to cylinder welds, and if your head is supplied w! ith a flange, it is the same thing. Sean On May 2, 2014 2:48:52 PM MDT, Joe Perkel via Personal_Submersibles <_personal_submersibles at psubs.org_ (mailto:personal_submersibles at psubs.org) > wrote: I have spotted the ABS diagrams and specifications for re-enforcement and butt welds at conical to cylinder transitions. I am somewhat unclear however as to terminating at the head. For example, the diagrams in the 2014 ABS underwater vehicles and hyperbaric chamber publication shows conical transitions either bordered by a cylinder at either end, or simply open at the small end??? I want to terminate the small end of a conical transition directly to a small diameter hemi-head without another straight section, but I am unclear as to whether or not that is acceptable in practice. Joe Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -----Inline Attachment Follows----- _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -----Inline Attachment Follows----- _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -----Inline Attachment Follows----- _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list _Personal_Submersibles at psubs.org_ (mailto:Personal_Submersibles at psubs.org) http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: From member-forum at psubs.org Sat May 17 23:15:43 2014 From: member-forum at psubs.org (Jon Wallace via Member-Forum) Date: Sat, 17 May 2014 23:15:43 -0400 Subject: [Member-Forum] Psubs Conference 2015 In-Reply-To: References: Message-ID: <537825DF.8050005@psubs.org> Moving this topic to the members-only mailing list until a location and other details are decided upon. Note that for 2014 Alvin is scheduled to be at-sea 304 days. Assuming a similar schedule for 2015 (not published yet) there's a very small window of opportunity to visit the sub *if* we can get permission to even do so. So the convention schedule will be driven by Alvin's availability. We will need some good contact info...Phil Nuytten, do you know anyone at Wood's Hole we can reach out to that would have the authority to schedule such a tour? A New England convention would need to be somewhere between May-September if diving is on the agenda. The rest of the year will be both too cold and water too rough. The Florida peninsula or Keys are the place to be for ocean diving. Ocean side was considerably better than Bay side in October last year. There is plenty of support and resources, plus numerous activities if you bring the family. I realize it's a haul for many (including myself) but of all the places we've ever been, and we've been around the country a bit, it can't be beat in my opinion. Weather, water, and resources add up to a winner of a location. Jon On 5/17/2014 3:55 PM, swaters via Personal_Submersibles wrote: > Hey guys, > I am planning the Psubs conference for 2015. There are 3 current > possable spots. > *Woods Hole and submarine Alvin tour. > *USS Nautilus museum in Conneticut > *Florida Keys > > Any other suggestions are welcome. I will be working on this and keep > everyone posted. > > Thanks, > Scott Waters > -------------- next part -------------- An HTML attachment was scrubbed... URL: From member-forum at psubs.org Sun May 18 00:09:33 2014 From: member-forum at psubs.org (James Hollander via Member-Forum) Date: Sun, 18 May 2014 00:09:33 -0400 Subject: [Member-Forum] Psubs Conference 2015 In-Reply-To: <537825DF.8050005@psubs.org> References: <537825DF.8050005@psubs.org> Message-ID: How many acres would you need lakeside? Have 2 acres of mowed grass on the west shore of Lake Mempremagog in Newport Center, VT. Public boat launch is just a mile south. Jim Hollander On Sat, May 17, 2014 at 11:15 PM, Jon Wallace via Member-Forum < member-forum at psubs.org> wrote: > > Moving this topic to the members-only mailing list until a location and > other details are decided upon. > > Note that for 2014 Alvin is scheduled to be at-sea 304 days. Assuming a > similar schedule for 2015 (not published yet) there's a very small window > of opportunity to visit the sub *if* we can get permission to even do so. > So the convention schedule will be driven by Alvin's availability. We will > need some good contact info...Phil Nuytten, do you know anyone at Wood's > Hole we can reach out to that would have the authority to schedule such a > tour? > > A New England convention would need to be somewhere between May-September > if diving is on the agenda. The rest of the year will be both too cold and > water too rough. > > The Florida peninsula or Keys are the place to be for ocean diving. Ocean > side was considerably better than Bay side in October last year. There is > plenty of support and resources, plus numerous activities if you bring the > family. I realize it's a haul for many (including myself) but of all the > places we've ever been, and we've been around the country a bit, it can't > be beat in my opinion. Weather, water, and resources add up to a winner of > a location. > > Jon > > > On 5/17/2014 3:55 PM, swaters via Personal_Submersibles wrote: > > Hey guys, > I am planning the Psubs conference for 2015. There are 3 current possable > spots. > *Woods Hole and submarine Alvin tour. > *USS Nautilus museum in Conneticut > *Florida Keys > > Any other suggestions are welcome. I will be working on this and keep > everyone posted. > > Thanks, > Scott Waters > > > > _______________________________________________ > Member-Forum mailing list > Member-Forum at psubs.org > http://www.psubs.org/mailman/listinfo.cgi/member-forum > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From member-forum at psubs.org Sun May 18 00:10:14 2014 From: member-forum at psubs.org (Jon Wallace via Member-Forum) Date: Sun, 18 May 2014 00:10:14 -0400 Subject: [Member-Forum] PC2015 - PSUBS Convention Message-ID: <537832A6.6020406@psubs.org> I don't know if that's true Jim, since Alvin travels world-wide. It's one of the things we have to find out...when will Alvin be in town. That's not to say the facility doesn't have other attractions that would give us reason to visit even if Alvin wasn't there. We just need to investigate. Jon Jim Todd said: I imagine the other 61 days when Alvin will be in port will be when the diving season is over, i.e., during the winter months. -------------- next part -------------- An HTML attachment was scrubbed... URL: From member-forum at psubs.org Sun May 18 00:18:46 2014 From: member-forum at psubs.org (via Member-Forum) Date: Sun, 18 May 2014 00:18:46 -0400 (EDT) Subject: [Member-Forum] PC2015 - PSUBS Convention Message-ID: <278dd.400fa78b.40a98ea6@aol.com> Right, otherwise the diving season would be much shorter than 304 days. It would be interesting to see where all it's scheduled for 2014. With the new depth capability it joins a fairly exclusive club, and many of the deeper parts are in the tropical seas. JT. In a message dated 5/17/2014 11:10:31 P.M. Central Daylight Time, member-forum at psubs.org writes: I don't know if that's true Jim, since Alvin travels world-wide. It's one of the things we have to find out...when will Alvin be in town. That's not to say the facility doesn't have other attractions that would give us reason to visit even if Alvin wasn't there. We just need to investigate. Jon Jim Todd said: I imagine the other 61 days when Alvin will be in port will be when the diving season is over, i.e., during the winter months. _______________________________________________ Member-Forum mailing list Member-Forum at psubs.org http://www.psubs.org/mailman/listinfo.cgi/member-forum -------------- next part -------------- An HTML attachment was scrubbed... URL: From member-forum at psubs.org Sun May 18 01:21:17 2014 From: member-forum at psubs.org (James Hollander via Member-Forum) Date: Sun, 18 May 2014 01:21:17 -0400 Subject: [Member-Forum] PC2015 - PSUBS Convention In-Reply-To: <278dd.400fa78b.40a98ea6@aol.com> References: <278dd.400fa78b.40a98ea6@aol.com> Message-ID: Lake Memphremagog extends from Vermont into Quebec-Canada, and goes as deep as about 100 meters when crossing into Canada, otherwise it is considered a shallow lake 5-100 ft. deep in Vermont. On Sun, May 18, 2014 at 12:18 AM, via Member-Forum wrote: > Right, otherwise the diving season would be much shorter than 304 days. > It would be interesting to see where all it's scheduled for 2014. With the > new depth capability it joins a fairly exclusive club, and many of the > deeper parts are in the tropical seas. > JT. > > In a message dated 5/17/2014 11:10:31 P.M. Central Daylight Time, > member-forum at psubs.org writes: > > > I don't know if that's true Jim, since Alvin travels world-wide. It's one > of the things we have to find out...when will Alvin be in town. That's not > to say the facility doesn't have other attractions that would give us > reason to visit even if Alvin wasn't there. We just need to investigate. > > Jon > > > > Jim Todd said: > I imagine the other 61 days when Alvin will be in port will be when the > diving season is over, i.e., during the winter months. > > > _______________________________________________ > Member-Forum mailing list > Member-Forum at psubs.org > http://www.psubs.org/mailman/listinfo.cgi/member-forum > > > _______________________________________________ > Member-Forum mailing list > Member-Forum at psubs.org > http://www.psubs.org/mailman/listinfo.cgi/member-forum > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From member-forum at psubs.org Sun May 18 02:20:28 2014 From: member-forum at psubs.org (Alan James via Member-Forum) Date: Sat, 17 May 2014 23:20:28 -0700 (PDT) Subject: [Member-Forum] PC2015 - PSUBS Convention In-Reply-To: <537832A6.6020406@psubs.org> References: <537832A6.6020406@psubs.org> Message-ID: <1400394028.13543.YahooMailNeo@web120903.mail.ne1.yahoo.com> I believe Woods Hole now own James Cameron's boat that went to the? bottom of the Marianas Trench?& are refitting it. A few of us from Psubs saw Alvin at UI convention New Orleans 2014. I even went to his 50th birthday party. Alan ________________________________ From: Jon Wallace via Member-Forum To: PSUBS Member Discussion Group Sent: Sunday, May 18, 2014 4:10 PM Subject: [Member-Forum] PC2015 - PSUBS Convention I don't know if that's true Jim, since Alvin travels world-wide.? It's one of the things we have to find out...when will Alvin be in town.? That's not to say the facility doesn't have other attractions that would give us reason to visit even if Alvin wasn't there.? We just need to investigate. Jon Jim Todd said: I imagine the other 61 days when Alvin will be in port will be when the diving season is over, i.e., during the winter months. _______________________________________________ Member-Forum mailing list Member-Forum at psubs.org http://www.psubs.org/mailman/listinfo.cgi/member-forum -------------- next part -------------- An HTML attachment was scrubbed... URL: From member-forum at psubs.org Sun May 18 02:59:11 2014 From: member-forum at psubs.org (Douglas Suhr via Member-Forum) Date: Sun, 18 May 2014 02:59:11 -0400 Subject: [Member-Forum] PC2015 - PSUBS Convention In-Reply-To: <1400394028.13543.YahooMailNeo@web120903.mail.ne1.yahoo.com> References: <537832A6.6020406@psubs.org> <1400394028.13543.YahooMailNeo@web120903.mail.ne1.yahoo.com> Message-ID: James, Lake Memphremagog sounds like a possibility. Vermont is pretty far up there but perhaps worth the trip. It sounds like it certainly has the depth for deeper diving. What is visibility like on average and when is it best? Alan, that sounds like it must have been fun. I'd love to get a chance to see Alvin in person. ~ Douglas S. On Sun, May 18, 2014 at 2:20 AM, Alan James via Member-Forum < member-forum at psubs.org> wrote: > I believe Woods Hole now own James Cameron's boat that went to the > bottom of the Marianas Trench & are refitting it. > A few of us from Psubs saw Alvin at UI convention New Orleans 2014. > I even went to his 50th birthday party. > Alan > > > ------------------------------ > *From:* Jon Wallace via Member-Forum > *To:* PSUBS Member Discussion Group > *Sent:* Sunday, May 18, 2014 4:10 PM > *Subject:* [Member-Forum] PC2015 - PSUBS Convention > > > I don't know if that's true Jim, since Alvin travels world-wide. It's one > of the things we have to find out...when will Alvin be in town. That's not > to say the facility doesn't have other attractions that would give us > reason to visit even if Alvin wasn't there. We just need to investigate. > > Jon > > > > Jim Todd said: > I imagine the other 61 days when Alvin will be in port will be when the > diving season is over, i.e., during the winter months. > > _______________________________________________ > Member-Forum mailing list > Member-Forum at psubs.org > http://www.psubs.org/mailman/listinfo.cgi/member-forum > > > > _______________________________________________ > Member-Forum mailing list > Member-Forum at psubs.org > http://www.psubs.org/mailman/listinfo.cgi/member-forum > > -------------- next part -------------- An HTML attachment was scrubbed... URL: