In Development

Display-Scale
Submarine Kits

Built in an afternoon. Built to last.

A workshop developing display-scale submarine models using Keel Core hybrid construction. Not shipping yet — follow the build.

See what's in the works → Notify me when kits are ready →
The Problem

Big submarines
shouldn't be this hard.

A traditional plastic submarine kit is 300 parts, brittle, and takes a winter to finish. A custom-built display model costs thousands and requires a year of waiting.

There hasn't been a middle path. Something big, accurate, durable — and accessible. Something a veteran could build with his grandson. Something that gets the details right without requiring the patience of a saint.

That's what Iron Keel is building.

In the Workshop

Three projects,
one fleet.

Iron Keel Virginia-class 4-inch hull in development
3" · 4" · 6" sizes

Virginia-Class Block IV

Built from original CAD files commissioned for Iron Keel. The flagship project.

In Development
Iron Keel Columbia-class 6-inch hull in development
~1/74 scale

Columbia-Class

Built on the 4" Keel Core system using a licensed hull design.

In Development
Iron Keel 3-inch and 4-inch Virginia-class hulls side by side
Iron Keel original · not a real Navy block

Block VI Custom Variants

Our own variant line — home for custom hull numbers, commemorative paint schemes, and original features like the Cribbage Payload Module.

In Development
See the full fleet →
Engineering

Engineered,
not just printed.

Keel Core is the reason an Iron Keel kit has 20 parts instead of 300. A Schedule 40 PVC core handles the structural work; 3D-printed parts handle the detail — bow, sail, stern, control surfaces.

The result is a sturdier model, a faster build, and a scale no traditional kit can match.

How Keel Core works →
Iron Keel connector ring showing how PVC interfaces with the printed hull sections
Build Log

Follow the build.

Every project update, every test print, every lesson learned lives on r/Military3DPrinting. Come watch the fleet come together.

Visit the subreddit →
Notify Me

Be first in line.

Iron Keel kits aren't shipping yet. Drop your email and we'll let you know when they are. No spam. No marketing. Just a heads-up when something's ready.

Questions or a specific boat in mind? (optional)

No spam. Ever.