USS Pennsylvania (1837) Cross Section Scale: 1:64

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#1
History

USS Pennsylvania was a four-decked 140-gun ship of the line of the United States Navy, named for the state of Pennsylvania. She was the largest sailing warship ever built for the Navy, and the equivalent of a first-rate of the British Royal Navy, but her only cruise was a single trip from Delaware Bay to Chesapeake Bay. She was just as large as the Spanish four-decked ship of the line Santisima Trinidad, built over 60 years earlier.

Pennsylvania was one of the "nine ships to rate not less than 74 guns each" authorized by the US Congress on 29 April 1816. She was designed and built by Samuel Humphreys in the Philadelphia Navy Yard. Her keel was laid in September 1821, but tight budgets slowed her construction, preventing her being launched until 18 July 1837. She had three complete gun decks and a flush spar-deck and her hull was pierced for 136 guns.

Exploding shell guns were replacing solid shot by the time Pennsylvania was fitting out. A Bureau of Ordnance Gun Register for 1846 records her armament as follows:

Spar deck: two 9 pounder (4 kg) cannons and one small brass swivel.
Main deck: four 8-inch (203 mm) chambered cannons received from Norfolk in 1842, and thirty-two 32 pounder (15 kg) cannons.
Middle deck: four 8-inch chambered cannons received from Norfolk in 1842 and thirty 32 pounder cannons.
Lower deck: four 8-inch chambered cannons and 28 × 32 pounder cannons.

Pennsylvania shifted from her launching site to off Chester, Pennsylvania, on 29 November 1837 and was partially manned there the following day. Only 34 of her guns were noted as having been mounted on 3 December 1837. She stood downriver for New Castle, Delaware, 9 December, to receive gun carriages and other equipment before proceeding to the Norfolk Navy Yard for coppering her hull. She departed Newcastle on 20 December 1837 and discharged the Delaware pilot on the 25th. That afternoon she sailed for the Virginia Capes. She came off the Norfolk dry dock on 2 January 1838. That day her crew transferred to Columbia.

Pennsylvania remained in ordinary until 1842 when she became a receiving ship for the Norfolk Navy Yard. She remained in the yard until 20 April 1861 when she was burned to the waterline to prevent her falling into Confederate hands.
 

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#2
Resources:

Photograph by M.C. Farrington
The Hampton Roads Naval Museum is an official museum of the United States Navy and reports to the Naval History and Heritage Command in Washington, D.C.

Penn museum model.jpg IMG_3818.jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#3
The Drawings:

The original drawing is by Howard Chapelle, model plans and sections by Jeff Staudt, the sheer and frames are by myself.

Pen_1 (2).jpg Pen_2 (2).jpg Pen_3 (2).jpg Pen_4 (2).jpg Pen_5 (2).jpg Pen_6 (2).jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#4
The Model:
The model is based on drawings from the book The History of the American Sailing Navy by Howard Chapelle and drawings by Jeff Staudt. It will be 8” long 12” wide and 36” high showing 30-gunports and the main mast up to and including the fighting platform. I revised my gantry to accommodate the new model made it wider and taller and added a level.

IMG_3064.jpg IMG_3065.jpg IMG_3066.jpg IMG_3067.jpg IMG_3068.jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#6
Hi Zoltan,
I haven't noticed any cross section models on the site and thought it could use one. I don't believe there is a kit on the market for the Pennsylvania so this build should be unique.
 

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#7
The Keel:
The keel is made from yellow hart it machines well and takes a nice finish. The keel has two 3/32” holes drilled in the bottom with pins made from 3/32” brass tubing and project into the baseboard ½” the fit is very tight and holds the keel firmly in place. This is a few photos of the keel.

IMG_3152.jpg IMG_3172.jpg IMG_3173.jpg IMG_3174.jpg IMG_3175.jpg IMG_3176.jpg

 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#9
Thanks Brian,
I will try to keep it interesting.
Mike
 

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#10
Frames:
The 17 frames are all double frames consisting of eleven sections made from yellow hart using Harold Hahn’s method to construct the frames as shown in the following photos.
Please note I use a special forty-pound frame press to ensure a good bond between each side of the frame.

IMG_3153.jpg IMG_3154.jpg IMG_3155.jpg IMG_3156.jpg IMG_3157.jpg IMG_3158.jpg IMG_3159.jpg IMG_3160.jpg IMG_3161.jpg IMG_3162.jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#11
Frames continuation:
A few more photos of the frame construction.

IMG_3163.jpg IMG_3164.jpg IMG_3165.jpg IMG_3166.jpg IMG_3167.jpg IMG_3168.jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#12
Finished Frames:
The assembled frames ready to be installed on the keel.

IMG_3169.jpg IMG_3170.jpg IMG_3171.jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#14
Hi Mike,
I use AutoCAD to do the drafting and have a 11x17printer, it works great for the large frames. I must splice sheets together on long plans but it is cheaper and faster than having them printed at a print shop. This is a large model even at the 1:64 scale.
Mike
 

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#15
Gantry Set-up:
The following photos show the gantry the frames being leveled in the keel prior to gluing.

IMG_3177.jpg IMG_3178.jpg IMG_3179.jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#16
Gunports:
I am using box liners in the gun ports to maintain a consistent size and appearance. This is a few photos of the assembly.

IMG_3180.jpg IMG_3181.jpg IMG_3182.jpg IMG_3183.jpg IMG_3184.jpg

 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#17
Frames Installation:
I started with frame 10 it is one piece at the end closest to the bow leveled and glued it to the keel. Frame 11 is in three pieces I marked the elevations on the first frame 10 installed and glued four spacers to it then leveled and glued the bottom of the third frame in place. Using spacers, the first two gunport frames are glued in place. I used spreader bars on the top of the frames to keep them on center and beams between the port and starboard gunports to keep them level. This method Is used to install the remaining frames. This set of photos shows the clamping and gluing procedure.

IMG_3185.jpg IMG_3186.jpg IMG_3187.jpg IMG_3188.jpg IMG_3189.jpg IMG_3190.jpg IMG_3191.jpg IMG_3192.jpg IMG_3193.jpg IMG_3194.jpg IMG_3195.jpg IMG_3196.jpg IMG_3197.jpg IMG_3198.jpg IMG_3199.jpg IMG_3200.jpg IMG_3201.jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#18
Frames Installation (continued):
This is a few more progress photos of the framing. All the frames are now in place.

IMG_3208.jpg IMG_3209.jpg IMG_3210.jpg IMG_3211.jpg IMG_3212.jpg IMG_3213.jpg IMG_3214.jpg IMG_3215.jpg IMG_3216.jpg IMG_3331.jpg IMG_3332.jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#19
Keelson and Limber Strakes:
The Keelson is installed with two 20 gauge brass pins at each frame. The following photos show the installation.

IMG_3333.jpg IMG_3334.jpg IMG_3335.jpg IMG_3336.jpg IMG_3337.jpg IMG_3338.jpg
 
Last edited by a moderator:

Mike41

Active Member
Staff member
Moderator
Joined
Aug 10, 2017
Messages
463
Points
43

#20
Deck Clamps:
The deck clamps for the Five decks were installed next. The scales and level on the jig made it easy to get the clamps in the correct position. The following photos show the installation.

IMG_3339.jpg IMG_3340.jpg IMG_3341.jpg IMG_3342.jpg IMG_3343.jpg IMG_3344.jpg IMG_3345.jpg IMG_3346.jpg IMG_3347.jpg IMG_3348.jpg IMG_3349.jpg IMG_3350.jpg
 
Last edited by a moderator: