Sound Propeller Systems

What Sound Propeller Systems does

Sound Propeller Systems, LLC (DBA SP Systems) is a privately held, independent marine propulsion technical services company founded in April 2007 and headquartered at 29 E. Marine View Dr., Everett, Washington. The company provides non-brand-specific repair, maintenance, overhaul, inspection, and re-engineering services for commercial marine propulsion systems — including Z-Drives, Controllable Pitch Propellers (CPP), bow-thrusters, stern tube sealing systems, rudder assemblies, shaft lines, water jets, couplings, and bearing systems — across equipment brands such as Bird Johnson, Kamewa, Berg, Ulstein, Liaane, Hundestadt, and Wartsila. A core differentiator is the ability to reverse-engineer and reproduce components for obsolete or unsupported propulsion units, supported by an in-house Z-Drive test stand and 24/7 global field service deployment.

The company operates from a 15,000+ square-foot facility equipped with three overhead cranes of up to 20 tons lifting capacity each, and maintains a small core team of approximately ten people — including three owners with combined 70+ years of marine propulsion experience and 100+ years of cumulative facility expertise. Ownership is held by Mike Wiegand (Owner and Technical Services) and Cliff Burns (Owner/Board Member), with Emily Fleming serving as General Manager. Revenue is generated entirely through professional services on a quote-by-quote basis: in-house facility overhauls at the Everett headquarters and worldwide field service deployment by Field Service Engineers to customer vessel locations. Services are sold directly to commercial marine vessel operators (ferries, cargo ships, tugs, workboats) and to marine shipyards, with a documented engagement on the State of Alaska Ferry Kennicott as a flagship current project and an SKF training/certification partnership supporting seal and bearing credentials.

Name

Sound Propeller Systems

Legal name

Sound Propeller Systems, LLC

Website

https://spsystemsusa.com

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

11–50 employees

Short description

Sound Propeller Systems is an independent Everett, Washington-based marine propulsion repair and overhaul services firm serving commercial vessel operators and shipyards worldwide with specialized Z-Drive, CPP, bow-thruster, and obsolete-component re-engineering work.

Ownership category

akta.pro rank

Product category

Marine Propulsion Repair Services

NAICS

Pump and Compressor Manufacturing (33391)

SIC

Engines & Turbines (3510)

akta.pro primary industry

Propulsion MRO, Spares & Field Service (Overhauls, retrofits, upgrades) (IMAJAHAN)

akta.pro secondary industries

Propulsion Integration, Commissioning & Testing (Factory/sea trials, alignment) (IMAJAHAM), Propellers & Waterjets (IMAJAHAE)

Keywords

• Marine propulsion services
• Z-drive repair
• Controllable pitch propeller
• Bow-thruster maintenance
• Shaft sealing systems

Headquarters

HQ city

Everett

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Marketing or Sales, Technology or R&D

Revenue model

1. Marine Propulsion Repair Services: Professional services revenue generated from repair, maintenance, and overhaul of commercial marine propulsion systems. Services include in-house and field service work on Z-Drive, CPP, bow-thrusters, seals, rudders, and shafting. 24/7 field service available worldwide.
2. Technical Consulting and Inspection Services: Provides inspections with recommendations for repairs, thorough service reports for documentation purposes, and technical oversight services for propulsion systems

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

SP Systems provides independent, non-brand-specific repair, maintenance, overhaul, and re-engineering services for commercial marine propulsion systems, including Z-Drives, Controllable Pitch Propellers (CPP), bow-thrusters, stern tube seals, rudder assemblies, shaft lines, couplings, water jets, propellers, and bearings. Services are delivered both on-site at customer locations worldwide via 24/7 dispatched Field Service Engineers and in-house at the company's 15,000+ square foot Everett, WA facility.

Product overview

Sound Propeller Systems (SP Systems) is a marine propulsion repair and maintenance services company, not a software product company. The company offers a unified portfolio of specialized technical services for commercial marine propulsion systems. Core service offerings include Z-Drive systems repair, Controllable Pitch Propeller (CPP) systems, bow-thruster maintenance, shaft seal services, rudder assembly repair, shaft line services, coupling systems, water jet systems, propeller services, supporting systems, bearing systems, and Z-Drive test stand capabilities. These services are delivered both in-house at their 15,000+ square foot Seattle facility and globally via field service engineers. Additional capabilities include component reverse engineering/reproduction for obsolete units, specialized Belzona and Enecon industrial repair, and 24/7 emergency response. The company represents multiple manufacturers in shaft seals and bearings to provide options without restrictions. Services cover equipment brands including Bird Johnson, Kamewa, Berg, Ulstein, Liaane, Hundestadt, and Wartsila.

Differentiator

Problem solved

Functional benefit

Products and services

• Z-Drive Systems Repair & Maintenance Specialized repair and maintenance services for Z-Drive marine propulsion systems, including inspections, overhauls, and field service support worldwide. Targeted at commercial marine operators and shipyards requiring expert work on multi-brand Z-Drive units.
• Controllable Pitch Propeller (CPP) Services Comprehensive inspection, repair, and overhaul services for Controllable Pitch Propeller (CPP) systems including blade seal replacement, hub rebuilds, crosshead manufacturing, and hydraulic valve manifold servicing. Intended for commercial vessel operators with CPP-driven propulsion.
• Bow-Thruster Systems Service Installation, maintenance, and repair services for bow-thruster units including tractor drive systems (both z-drive and cycloidal variants). Serves commercial marine operators needing thruster reliability.
• Shaft Seal Systems Service Repair and maintenance of stern tube sealing systems and shaft seals, including oil stern tube seals and John Crane MX9 seals. SP Systems represents multiple manufacturers in shaft seals to give customers brand-neutral options.
• Rudder Assembly & Hydraulic Steering Service Inspection, repair, and overhaul services for rudder assemblies and hydraulic steering systems on commercial marine vessels.
• Shaft Line Services Marine shafting services including tail shaft blue fitting, shaft inspection, and composite/rudder/cutlass/babbit/roller bearing services for commercial vessel operators.
• Coupling Systems Service On-site hydraulic coupling removal and marine coupling blue fitting services for marine propulsion systems.
• Water Jet Propulsion Service Repair and maintenance services for marine water jet propulsion systems on commercial vessels.
• Propeller Services Propeller sizing, design, manufacturing, inspection, and repair services including blue fitting of propellers and couplings for marine operators.
• Marine Bearing Systems Service Repair and replacement services for marine bearing systems including spherical bearings, thrust bearings, and various shaft bearing types.
• 24/7 Emergency Field Service Round-the-clock emergency repair support available 24 hours a day, 7 days a week, including field service that extends overseas for marine propulsion breakdowns.
• Supporting Systems Service Support system services including OD box shaft, rigging, and ground strap/brush systems for commercial marine propulsion packages.

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• SKFcoreStrategic or Co-development PartnerSKF conducted a training and certification summit with SP Systems staff. Training and certification sessions were held at SP Systems facilities with participation from both organizations in teaching and learning. SP Systems also mentions successful ongoing training with SKF, with BBQ/party events held after training sessions.

Scale indicators6 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Wärtsilä Services: Global marine OEM and service provider covering engines, propulsion, and lifecycle services. Comparable as a broad incumbent SP Systems competes against in Z-Drive/CPP servicing of Wärtsilä/Kamewa/Liaaen equipment.
• ABB Marine & Ports: Provides marine propulsion, automation, and service solutions including Azipod systems and aftermarket support. Comparable as a broad incumbent offering overlapping propulsion service capabilities for commercial vessels.
• Kongsberg Maritime: Supplies marine automation, propulsion control, and DP systems with a global service network. Comparable as a broad incumbent whose installed base (Ulstein, etc.) SP Systems services.
• ZF Marine Technology: Marine propulsion and driveline manufacturer with global service network for commercial and pleasure craft. Comparable incumbent offering overlapping propulsion system service and overhaul.

Regional players

• Nakashima Propeller Co., Ltd. Japanese manufacturer and servicer of marine propellers and propulsion components with a strong Asian installed base. Comparable as a regional specialist in propeller MRO that competes for global commercial marine service work.
• Teignbridge Propellers: UK-based propeller manufacturer and rebuilder serving commercial marine and offshore. Comparable as a regional specialist in propeller design, manufacture, and repair.
• Hundested Propeller (Hundestedt): Danish manufacturer and servicer of controllable pitch propellers. Comparable as a regional specialist in CPP systems — an equipment family SP Systems services and one whose OEM equipment SP Systems re-engineers.

Direct peers

• John Crane: Manufacturer and servicer of mechanical seals including marine shaft seals (MX9 referenced by SP Systems). Comparable as a direct peer/partner in the marine sealing and stern tube service category SP Systems operates in.
• Michigan Wheel Marine: US-based propeller manufacturer and service provider for commercial and recreational marine. Comparable direct peer in propeller design, manufacture, and repair serving North American marine operators.
• Coolidge Propeller (Sound Propeller Services): Predecessor/affiliated entity to SP Systems focused on propeller sizing, design, and manufacturing in Seattle since 1966. Highly comparable as a regional specialist in propeller services and the historical lineage of the current team.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/spsystemsusa

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sound Propeller Systems