Legacy of the USS Montauk: Student at the Savannah College of Art and Design believes she has the blueprints for success to produce 3D model of ironclad for park

Blueprints are matched with 3D model; illustration of Montauk shelling Nashville

Like the Montauk itself, a 3D model of the noted Civil War ironclad must be watertight, with no problematic gaps or holes.

That’s one of many goals for Grace Stelmaszyk, a senior at Savannah College of Art and Design (SCAD), who is working to produce and print a model of the Montauk for Fort McAllister State Park in Richmond Hill, Ga. The Montauk bombarded the Confederate fort and sank the raider Nashville (Rattlesnake) in February 1863.

The college previously produced interpretive panels about the Montauk and other Union ironclads for the park. Greg Johnson, interactive design and game development professor, has worked with students to make a 30-inch version of the Montauk, so it can be placed next to a model of the Nashville in the park’s museum.

Stelmaszyk (right) has picked up the project from another student, and she hopes to get it across the finish line in the next couple months. Johnson said she is doing “an amazing job” on the model, making sure it conforms with blueprints of the Montauk.

Key to the effort is a discovery made by park staffers several years ago: A matted long tube contained a precious copy of the USS Montauk’s blueprints, manufactured in dozens of sheets.

Johnson, after learning about the blueprints, used a custom-built rig to slide dozens sheets under a camera to obtain high resolution.

“Because I had to photograph the blueprints, since they were way too big to scan, there is a certain amount of distortion. Grace had to fix the distortion in the blueprints and then adjust the model to match,” Johnson said in an email.

Stelmaszyk, who is graduating with an interactive design and game development degree in May, hopes to have the model ready for printing by early summer.

“My current list of items to complete for a print-ready model are adding adequate thickness to all components of the model, combining all components so the model is ‘watertight,’ deciding how many pieces need to be printed separately and assembled (small things like the thin poles need to be separate since the printer may not print them right if they're part of a larger piece), and then sizing the model to the correct in-person length.”

Persistent Union ironclad finally got its prey

Working 3D Montauk model being produced for printing (SCAD photo)

The Montauk was one of 10 Passaic ironclads built relatively early in the Civil War.

Andy Hall, A Civil War naval expert and author, told the Picket the Passaic monitors were the first large-class of monitors and many of them served together, such as the campaign against the earthen Fort McAllister in 1863 and 1864.

The Union navy, as it continued its chokehold on Southern ports and readied for offensive operations, sent the Montauk and sisters Passaic, Patapsco and Nahant, supported by gunboats Seneca, Dawn and Wissahickon to bombard and capture Fort McAllister in January 1863.

The skipper of the Montauk was John Worden (left), famous for being the USS Monitor’s captain when it clashed with the CSS Virginia in 1862.

Capable Confederate gunners at Fort McAllister hit the ironclad 13 times in its first action, but caused little damage. A second attack on Feb. 1, 1863, found the vessel, according to histories, pounded by 48 shells. The Montauk's sister ships also took part in the action.

Its big day came on February 28. The sidewheeler Nashville, which was bottled up and hiding under the guns of Fort McAllister for protection, tried to get away from the Federal ironclads via Seven-Mile Bend on the Ogeechee River, but apparently ran aground.

The 215-foot blockade runner commanded by Lt. Thomas Harrison Baker became a sitting duck because of its lack of maneuverability and deep draft in a tight area, and the Montauk pounced.

“All the monitors were designed for littoral or riverine operations, and so drew as little water as possible,” says Hall. “Nashville was built as an ocean-going steamship, so had a fuller, deeper hull.” That proved to be a disadvantage at McAllister.

Montauk’s XV- and 11-inch Dahlgrens were able to destroy the former commerce raider.

Worden was pleased with his destruction of ‘this troublesome pest’” wrote John V. Quarstein, director emeritus of the USS Monitor Center in a blog. “However, Montauk suffered a huge jolt when it struck a Confederate torpedo en route down the Ogeechee River. Worden’s quick thinking saved his ironclad.” (Quarstein wrote a recent biography of Worden.).

The Union naval attacks on Fort McAllister itself were less successful. The low-profile earthen fort could withstand the shelling and repairs could be readily made. It eventually fell to land forces in December 1864.

The Montauk was scrapped in the early 1900s; the park grounds and museum have a large number of CSS Nashville artifacts.

USS Montauk (left) and USS Lehigh in Philadelphia in 1902 (Wikipedia)

While the monitors were mass-produced, they did undergo changes during the service, and SCAD students wanted to be sure the appearance of the Montauk matched the time it prowled off Fort McAllister.

SCAD is working from a Montauk paint scheme described in the work “Modeling Civil War Ironclad Ships” by Steven Lund and William Hathaway. 

The deck is lead gray, the turret and pilot house black with a narrow white ring, and the smokestack black with the upper one third in dark green.

Lots of tasks and challenges during project

SCAD and the park last year took measurements of the Nashville model and studied vital stats of both vessels, so the Montauk will be to scale. (Site manager Jason Carter below, Picket photo)

“This makes the USS Montauk model 30 11/16th inches or 780mm in length,” said Johnson. The ironclad, he says was slightly asymmetrical.

I asked the professor about the challenges of such a project.

“To build a complex 3D model like the USS Montauk and then 3D print it, you first need a solid understanding of 3D modeling fundamentals, know how to create clean geometry and also accurately match real-world measurements,” he responded.

“Software like Autodesk's Maya or 3dsMax is generally used -- so a very thorough understanding of that software is required. You must build the model specifically for printing by ensuring it is fully closed (watertight, with no holes in the geometry), has appropriate wall thickness, and accounts for overhangs or tolerances so that parts can be fit together after printing. Once the ship is modeled, it will need to be exported to a file readable by the 3D printer and then loaded into a slicer, where things such as layer height, infill, supports, and other print settings will need to be determined.”

After that is completed, the model must be assembled and painted.

Stelmaszyk said she is using Maya and ZBrush software.

The student said she joined the effort to help create something for the park and increase her knowledge on different types of projects that aren't only game-industry focused. “While maybe my knowledge on this ship isn't as vast as some, I enjoy the research that I get to do for the project to create for the public's enjoyment,” she wrote in an email.

“I'd say the most gratifying part of the experience is always working towards that end goal of printing and being able to hold it in my hands and see it in the world. All the little steps that are completed along the way also bring me a lot of satisfaction as I keep going forward. The most challenging part of this project would be predicting the final print. For example, predicting the thickness and what that will look like when printed or planning how you want to assemble the smaller, fragile pieces back onto the main body. But I've always loved solving puzzles.”

SCAD will be working from this paint scheme (Courtesy Steven Lund)