[Post Reply] [*]  Page 1 of 1  [ 6 posts ] 
Author Message
alexkon3
Post subject: Alaska class Large Cruiser plexiglass windscreenPosted: January 12th, 2019, 6:37 pm
Offline
Posts: 2
Joined: January 12th, 2019, 5:44 pm
Hello folks!

I always really liked the Alaska class, but I have a bit of a dislike for open Bridges. I just don't really like them aesthetically. What really remedied them for me is, after I read more into US cruisers, when I found out that most US Cruisers had plexiglass windscreens installed on them which, in my honest opinion, makes them look a bit like racing boats... and thus look pretty awesome :D For example USS Pensacola: http://www.navsource.org/archives/04/035/04035104.jpg

Now, back to Alaska. I first noticed a similar installation of windscreens on her because she's an upcomming ship in World of Warships and the screenshots clearly show those screens. I looked all over the Internet to find any source and picture for those windscreens, but most pictures are a very low resolution or bad quality. I have looked at countless line drawings and shipplans and even ship models and none ever include those windscreens.
I have found a few pictures:
https://www.ibiblio.org/hyperwar/Online ... 03033a.jpg
Captain Noble on the Bridge
http://www.navsource.org/archives/04/1201/04020130a.jpg
here is a great picture from navsource
http://www.worldwar2facts.org/wp-conten ... a-CB-1.jpg
here we have a crew photo where you can see it faintly
Now, my question would be: Has anyone any more infromation on those windscreens? When did the Alaska class get them installed (Did Guam get them?) or any more pictures or plans concerning this? I know its a very specific and obscure thing but this is giving me no rest, I need to know more about Alaskas Windscreens. :lol:

Cheers
Alex


Top
[Profile] [Quote]
heuhen
Post subject: Re: Alaska class Large Cruiser plexiglass windscreenPosted: January 12th, 2019, 11:42 pm
Offline
User avatar
Posts: 8279
Joined: December 15th, 2010, 10:13 pm
Location: Behind you, looking at you with my mustache!
after my understanding is that most ships with a open bridge had windscreen, to protect the crew from (cold) wind and water spray when traveling at speed in rough sea... you will be surprised how far water spray from the bow can travel.

basically if you see a ship with open bridge, you can assume that they have some sort of weather protection (windscreen), it can be a sort of wing in front of the bridge that will channel the air upward and create an natural-airwall or and windscreen.

would you stand on a bridge in +-30 knots facing the wind and water-spray from the bow... in ice-cold weather


Top
[Profile] [Quote]
Colosseum
Post subject: Re: Alaska class Large Cruiser plexiglass windscreenPosted: January 14th, 2019, 12:38 am
Offline
Posts: 5009
Joined: July 26th, 2010, 9:38 pm
Location: Austin, TX
Contact: Website
Welcome. I don't have an exact date for you on when the Plexiglas wind screens became widespread, but my general guess (based on the ships I've researched) would be mid-to-late 1944 onward. It's a pretty small detail in most photos, which is why you don't often see them in plans and model kits especially. The highly-detailed Floating Drydock plans for Alaska don't show the wind screens. My own drawings of Alaska and Guam don't show them (they were last updated in 2014) though I've had them on my list of alterations for later revisions.

The photo of CAPT Noble on the bridge is the best close-up I've seen, but I've also seen good close up shots of the Plexiglas windshields on photos of Indianapolis and on some of the DDs.

Indianapolis at Mare Island in May 1943 shows the new rebuilt open bridge, but no windshield:
[ img ]

By Dec 1944, the windshield had been added (the white circle on the photo indicates it was a recent alteration during this yard period):
[ img ]

Another shot of the windshields, this time during the Jul 1945 yard period at Mare Island, shortly before the voyage to Tinian (interestingly the windshields are circled again -- maybe they were modified?)
[ img ]

---

Similar models of Plexiglas windscreens were fitted to the first of the Allen M. Sumner units which had the distinctive enclosed "British style" bridges. Here are two shots of DD-724 Laffey's bridge showing the interior of the open conning station:

[ img ]
[ img ]

A plan view of the bridge shows the windshields as well (I'm not sure which specific DD these plans are for):
[ img ]

---

Re: the Alaska class, the pre-commissioning photos of Alaska show the windshields in place on the conning station bulwarks at the 07 level:
[ img ]

Photos of Guam during the same period show the windshields in place, though they are hard to make out. Guam's workup photos (in camouflage) show a canvas canopy mounted over this position.

Given this, think it's safe to assume these windshields were fitted during construction (likely as a "new development" they were slotted into the yard's schedule and fitted on the ships). Without finding the actual builders' plans of Alaska and Guam, would be difficult to know. You could also search for the original shipyard correspondence at NARA, or ask the researchers on the Model Warships forum.

Hope that helped.
Quote:
basically if you see a ship with open bridge, you can assume that they have some sort of weather protection (windscreen), it can be a sort of wing in front of the bridge that will channel the air upward and create an natural-airwall or and windscreen.
In USN parlance this is a "venturi shield" -- a wind deflector that uses the venturi effect to create an area of dead air right in front of the bulwark so watchstanders aren't blasted by cold air.

Will you now tell us what the Norwegian navy calls it? ;) :P

_________________
USN components, camouflage colors, & reference links (World War II only)


Top
[Profile] [Quote]
heuhen
Post subject: Re: Alaska class Large Cruiser plexiglass windscreenPosted: January 14th, 2019, 11:31 am
Offline
User avatar
Posts: 8279
Joined: December 15th, 2010, 10:13 pm
Location: Behind you, looking at you with my mustache!
Quote:
basically if you see a ship with open bridge, you can assume that they have some sort of weather protection (windscreen), it can be a sort of wing in front of the bridge that will channel the air upward and create an natural-airwall or and windscreen.
In USN parlance this is a "venturi shield" -- a wind deflector that uses the venturi effect to create an area of dead air right in front of the bulwark so watchstanders aren't blasted by cold air.

Will you now tell us what the Norwegian navy calls it? ;) :P
[/quote]

directly translated: Can't remember, but probably "Venturi...", Norway back then loved to take English word and make them Norwegian in the military


Top
[Profile] [Quote]
alexkon3
Post subject: Re: Alaska class Large Cruiser plexiglass windscreenPosted: January 16th, 2019, 7:50 pm
Offline
Posts: 2
Joined: January 12th, 2019, 5:44 pm
Thank you very much for all the help. Those small details about ships are super interessting!
Quote:
You could also search for the original shipyard correspondence at NARA
Can I do this from Austria? :D


Top
[Profile] [Quote]
Colosseum
Post subject: Re: Alaska class Large Cruiser plexiglass windscreenPosted: January 16th, 2019, 8:36 pm
Offline
Posts: 5009
Joined: July 26th, 2010, 9:38 pm
Location: Austin, TX
Contact: Website
Ha, for sure -- I love researching this stuff myself.

Re: accessing the shipyard correspondence at NARA, there are paid researchers for hire, but I think your best bet would be to ask the ModelWarships guys if they've ever come across any correspondence relating to Alaska. Unfortunately it seems like US National Archives require an actual visit in-person, vs. searching online in most cases.

_________________
USN components, camouflage colors, & reference links (World War II only)


Top
[Profile] [Quote]
Display: Sort by: Direction:
[Post Reply]  Page 1 of 1  [ 6 posts ]  Return to “General Discussion”

Jump to: 

Who is online

Users browsing this forum: No registered users and 3 guests


The team | Delete all board cookies | All times are UTC


cron
Powered by phpBB® Forum Software © phpBB Limited
[ GZIP: Off ]