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NAUTILUS

Capabilities

Every trade a complex availability demands.

In-shop fabrication quality with the mobility to work wherever your vessel is — pier-side, in dry dock, or with a crew sent to the ship.

Plasma cutting of steel plate in the fabrication shop

Fabrication

Steel, formed to spec.

In-shop fabrication held to the standard of a dedicated yard — from one-off repair parts to production runs, delivered to marine and industrial specifications.

  • Metal fabrication — components and complete assemblies
  • Structural steel — cutting, forming, and erection
  • Watertight doors and hatches — fabrication, repair, and certification support

Yacht owners: stainless, aluminum, and tank work — at your slip or in our shop

Welder performing TIG welding aboard ship

Welding

Qualified procedures, shop or shipboard.

Our welders are qualified to NAVSEA procedures across SMAW, FCAW, GMAW, GTAW, and GTAW pipe — in the shop or aboard ship. Send us your specification and we'll confirm procedure coverage for your scope.

  • SMAW — qualified procedure
  • FCAW (flux-cored) — qualified procedure
  • GMAW (MIG) — qualified procedure
  • GTAW (TIG) — qualified procedure
  • GTAW pipe (TIG pipe) — qualified procedure

Commercial vessels and workboats: our marine services

Amphibious assault ship in dry dock at a San Diego shipyard

Shipboard execution

Repair availabilities, trade by trade.

The trades that come together for shipboard work in support of Navy repair availabilities — planned, staffed, and documented to qualified procedures.

  • Pipefitting — hydraulic, seawater, and auxiliary systems
  • Electrical work and cable pulling
  • Machinery services through our vetted partner
  • Shipboard work in support of Navy repair availabilities

Primes and contracting officers: NAICS, CAGE, and past performance

Design & engineering

We don't just repair vessels. We design them.

Our next-generation electric amphibious platform — a design study developed with marine engineers, battery technology experts, and amphibious vehicle specialists for a San Diego tour fleet operator.

Concept render of a next-generation electric amphibious tour vehicle on the shoreline

Purpose-built platform

Lightweight amphibious architecture engineered for both land and sea — not an adaptation of a legacy hull.

Redundant propulsion

Independent dual-drive systems for road and water operations, engineered for fail-operational safety.

Marine-grade HV systems

Sealed high-voltage architecture with active isolation monitoring against water intrusion.

Real-time diagnostics

Continuous telemetry for battery health and system status, enabling predictive maintenance.

Concept visualization — design study. Specifications subject to engineering development.

Read about the design study

The full index

Eight core trades. One accountable partner.

Metal Fabrication

In-shop and shipboard fabrication of components and assemblies, from one-off repair parts to production runs.

Structural Steel Manufacturing

Design-assist, cutting, forming, and erection of structural steel for marine and industrial applications.

Qualified Welding

SMAW, FCAW, GMAW, GTAW, and GTAW pipe — performed by welders qualified to NAVSEA procedures, in the shop or aboard ship.

Pipefitting

Shipboard piping repair, renewal, and new installation across hydraulic, seawater, and auxiliary systems.

Electrical & Cable Pulling

Shipboard electrical work and cable pulling supporting modernization and repair availabilities.

Watertight Doors & Hatches

Fabrication, repair, and certification support for watertight doors, hatches, and closures.

Machinery Services

Machinery repair and overhaul delivered through our vetted machining partner.

Repair Availabilities

Shipboard work in support of Navy repair availabilities.

Where we work

The quality of a home yard, wherever your vessel is.

San Diego, CA

Our Chula Vista shop and headquarters — pier-side and dry dock support around the bay

Newport, Oregon

Our crew aboard R/V Marcus G. Langseth, in 2019 and 2020

Wherever the ship is

Parts built to drawing and shipped to the vessel — in 2026, to Norfolk, Virginia

Ready to scope your next repair or availability?

Send us your work package — or photos and drawings — and our team will respond with a plan.