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Cable Transits & Penetration Seals
for Fire-Rated Divisions

Specified Technologies Inc. (STI) was founded over 30 years ago and has become the industry leader in passive fire protection by providing premium quality, high performance and technologically advanced fire safety products and solutions that help save lives and protect property. STI Marine Firestop is a Division of STI focused on shipbuilding and maritime applications.



Why Adapting to New Marine Cable Management Solutions is a Good Thing

The shipbuilding market is on slow but constant evolution. Shipyards and owners are constantly watching the new technologies and the growth of the products available on the market.   Despite the Covid-19 pandemic that brought this sector to a challenging position for many months, the invention of new products that can change the design approach of…


Most Vulnerable – Detecting and Suppressing Fire During Construction and Overhaul

As originally published in the October 2021 issue of SNAME’s MT Magazine. See original article printing here Shipboard fires during overhaul and maintenance activities pose a significant threat to our national security. Ships are most vulnerable to fire during construction and overhaul periods because the normal layers of protection are not present. Permanent fire protection systems may be out of service, fire resistant boundaries…


7 Tried And True Firestop Products Enhanced For Modern Shipbuilding 

It is no surprise to many of us in the Marine Industry that some shipbuilding processes are steeped in “old school,” traditional shipbuilding methods and products. A common method of firestopping uses gooey stuff forced around cables and pipes in bulkhead openings and is referred to as monkey $#+! New innovations are rapidly changing the…


Sealing Temporary Penetrations with Marine EZ-Path® Cable Transits

The COVID-19 pandemic has forced everyone to become more resourceful. This is especially true in healthcare facilities on land. Equipment traditionally contained within the patient room, such as IVs, Infusion Pumps, and patient monitoring equipment, have been moved into the corridor in an attempt to conserve personal protective equipment (PPE) and reduce the frequency of…


New RINA MED Certificates

We at STI Marine Firestop, a division of Specified Technologies Inc., are pleased to announce the release of our new and improved RINA MED Certificates! This set of pipe and cable transit certificates are our most comprehensive yet! Continue reading below to learn how we have managed to further enhance our firestop solutions!   EZ-Path®…


Introducing Paul Switzer – North American Sales Manager – Marine & Industrial

Paul Switzer has joined Specified Technologies Inc. as the North American Sales Manager for Marine & Industrial. In his new position, his responsibilities will include building and managing the growth of STI’s firestop products in the marine and industrial vertical markets in Canada, USA, Mexico and Caribbean. Bringing more than 20 years of industry experience…


MBD100 Marine Busbar Device: The New A-Class Transit for Schneider Canalis Busbar Assemblies

Busbar systems are often used on board big cruise ships to distribute electrical power to public spaces or cabin areas. These systems can carry a considerable amount of electricity while taking up less space than comparable power cable systems, making them ideal for high current applications on large projects. Until now, older wet-applied sealant systems…



The past 12 months have seen Containment become an integral part of our personal and social lives. Containing the spread of the virus by self-quarantining, masking, social distancing, etc. Containment Maintenance in the marine world is a fact of life that is all too often ignored, or at best, taken for granted, creating a false…


EZ-Path® MDM 150 & 400 Fire-Rated Cable Transit Sound Transmission Loss Testing

Bulkheads and Decks, built to contain both fire and sound, are commonplace in modern shipbuilding construction. Beyond the protection of occupants and property, personal privacy is of ever-increasing importance. For this reason, divisions are constructed with elements to reduce sound transmission. These elements could range from incorporating various types of materials or insulations, to increased…


Type Approval & Submittal Builder

We at STI Marine Firestop continue to work hard to streamline your firestopping experience from start to finish! Whether you are looking for a data sheet, installation sheet or type approval certificate, we want to provide you all the information you need at your fingertips. Our new Submittal Builder not only provides easy access to…


Improve your HVAC system, Reduce the Installation Time

2020 will be remembered, unfortunately, for the Covid-19 Pandemic, that impacted the entire world. Like most markets, the shipping industry was heavily affected by the pandemic, with thousands of ships stopped, for long periods, and with new mandatory safety regulations for sailing . One of the latest focuses to come from the pandemic are ways…


STI Marine Snap-Seal

This is an article originally published by one of our West Coast based distribution partners, Innovative Marine. Author Trevor Lucey is the President of Innovative Marine and a marine industry veteran. In this article, he highlights how a product like STI Marine Snap-Seal can be used pro-actively to help mitigate the effects of fire onboard…


Use of MFS Marine Firestop Sealant in Extreme Temperature Applications

STI Marine’s MFS Marine Firestop Sealant consists of a hybrid-polymer formulation unlike any other in the marine market.   Our customers continue to be impressed by the ease of installation and enhanced shelf life as compared with competitive sealants. However, the benefits of using MFS Sealant extend far beyond just installation. MFS Sealant is formulated such…


Sleep Safe on STI Marine Firestop Pillows

In the event of a fire during construction or repair of the ship, a temporary passive firestop solution is needed to protect the vessel, craftsmen, and crew. Limiting fire spread on a ship is a Valuable, Necessary and Pro-active Safety Measure.  STI proposes a solution using firestop pillows. The pillows are stuffed around penetrants through open…


Technical Bulletin – Use of Large Diameter Firestop Collars for Scrubber Upgrades with FRP/GRE/GRP Pipes

Technical Bulletin – 16320-01                 Use of Large Diameter Firestop Collars for Scrubber Upgrades with FRP/GRE/GRP Pipes. Insight into Various Type Approval Agency Interpretations Concerning Use The International Maritime Organization’s (IMO) effort to reduce the global Sulphur limit and impose stricter Sulphur limits in the Sulphur Emission Control Areas (SECAs) has led to extensive use of…


The New Normal is not Normal

Current global pandemic may have a severe impact on building costs. The world is dealing with a situation that is bizarre, rare and which is creating all kinds of new problems and challenges. Let’s look at the challenges, the problems we will overcome and we certainly hope you, family and loved ones are safe and…


EZ-Path Marine Cable Transits Provide Reliable Smoke and Air Sealing

Third-party review of air leakage data on various cable transit sealing systems.  EZ-Path Marine Cable Transits provide reliable smoke and air sealing and outperform many traditional methods. Read about it here  


New USCG Panel Bulkhead Approvals

STI Marine, a Division of Specified Technologies Inc., is pleased to announce the release of United States Coast Guard Type Approval Certificates for A-0 through A-60 panel bulkhead penetrations! Panel systems provide a light weight, labor saving, tested system that can provide A class fire ratings needed for Marine Offshore as well as Oil and Gas…


Sometimes size does matter

MFC-G Large Diameter GRE/GRP/FRP Firestop Collars massive size update! Early this year, we were asked to find a solution for large ships such as Cruise ships, Ferries, Tankers and merchant ships that need to install EGCS (Exhaust Gas Cleaning System) using huge composite pipes to handle the treatment of sea water. The size of the composite…


In a shipyard not too far from reality…

Production Meeting Notes SandBar Shipbuilders April 1, 2020 Hull 666 M/V Arc Mr. Jones, Yard Superintendent, opened with a Safety Briefing about company policies on Covid 19 and Personal Protection Equipment. Mr. Smith, Project Manager for Hull 666, M/V Arc, reminded all that the ship sails next week. He received reports from the Hull, Mechanical,…


This is the first newbuild in Norway with STI Marine cable transits

The Ulstein Verft Shipyard is now preparing to deliver the expedition cruise ship National Geographic Endurance to the American cruise line Lindblad Expeditions. This ship will be the first newbuild in Norway to be equipped with STI Marine cable transits, EZ-Path® – supplied by Elpro.     — EZ-Path® is a new and innovative solution, but our…


STI Appoints Cooley Equipment Sales Inc. as Marine Products Rep for Western US and Canada

STI Marine Firestop, A Division of Specified Technologies Inc., is pleased to announce that Cooley Equipment Sales Inc. (CES) has joined on as the marine products rep for Western US and Canada.  Their territory will include the States of California, Oregon, Washington, Hawaii, and Alaska and the Province of British Columbia.  CES represents manufacturers in…


Transition to Self-Sealing Cable Transits and Realize the Benefits

Cable transits or passages in fire-rated divisions are not always the first thing one thinks of in ship construction.  They are obviously necessary and a SOLAS requirement, but did you know that selecting the right cable transit during ship construction can save time and money? According to shipyards we have interviewed, approximately one in three…


Durability of Snap-Seal Cable Plug and MFS Sealant When Subjected to Pressure Washer Hose Stream

Introduction: STI Marine has conducted ingress protection (IP) testing to evaluate the ability of our Snap-Seal Cable Plugs to be installed in exterior applications where inclement weather, such as wind-driven rain, may be a concern. We achieved an ingress protection rating of IP66 with a thin application of MFS Marine Firestop Sealant installed over the…


MPACT® Pipe & Cable System – Installation & Spacing

Our MPACT® Pipe and Cable System is the fastest and most flexible fire and watertight sealing system for pipe and cable penetrations through fire-rated bulkheads and decks. It is easy to install and consists of a noncombustible filler blanket,  which packs easily between penetrants, and our MFS Sealant, which bonds well to marine divisions and…


STI Marine Firestop Provides New and Innovative Solutions

MFC-G Large Diameter GRE/GRP/FRP Firestop Collars EZ-Path® Marine Cable Transits Refit Scrubber Projects onboard larger Cruise Ships realized in half the time with STI Marine pipe collars. The rise of the EGCS Exhaust Gas Cleaning systems, in short, referred to as scrubber systems, has led to various solutions attempting to meet these fire protection demands….


New & Improved Type Approvals – Marine Firestop Collars

STI Marine, a Division of Specified Technologies Inc., is pleased to announce the release of three new type approval certificates, issued by the United States Coast Guard, Lloyd’s Register and RINA, for the Marine Firestop Collar product line. Copies of these approvals are available on our website at Not only do these type approval…


Passive Fire Protection: Serious Business

STI Marine Firestop’s Online Fire Protection Training Program features curriculum that targets shipyard employees, contractors and surveyors. When STI Marine Firestop – a division of Specified Technologies – added a new, free Marine Online Training Program to its website, its purpose was to provide in-depth curriculum that targets shipyard employees and contractors and the surveyors that must inspect their work….


STI Marine Adds New Distribution Partner

Somerville, New Jersey, USA (April 15, 2019) – STI Marine, a Division of Specified Technologies Inc., is pleased to announce the appointment of Pole Star Maritime, LLC as an authorized distributor partner for our marine products line of penetration seals and cable transits.  Pole Star Maritime is led by industry veteran, Steve Hadik, and based…


Repair of Pipe and Cable Transits Previously Sealed with RTV Silicone Foam

Certain cruise ships built in Europe used plural component RTV silicone foam as the means of sealing pipe and cable penetrations. A popular RTV foam product used in some shipyards was Pensil® 200[1]. As modifications are made to plumbing and electrical systems which were sealed with this material, portions of the foam must be removed,…


Spring 2018 Newsletter

Snap and Seal that cable really fast The Marine Snap Seal MSS25 is a two-piece device snaps together for easy installation and is ideally suited for single or double cable penetrations. Certified for A60 for Data, Electrical, Signal cables or hydraulic tubes. Speed up your repair work on MCT sleeves: For repair work we have…


Scupper Drain Penetrations and Transitions from Metallic to Plastic Pipe

The increased use of plastic pipe onboard vessels has led to a greater quantity of transitions between metallic pipes and plastic pipes. In no application is this more prevalent than metallic scupper drains, where a section of metallic pipe is affixed to the scupper and transitions to plastic drain pipe (See Figure A). Figure A:…


Cable Transit Fill Percentages Calculated vs. Visual Fill Percentage

One of the most common applications in fire rated bulkheads and decks are cable transits to accommodate electrical or data communications cables. The IMO FTP 2010 Edition states, “…divisions may have to be provided with apertures to allow them to be penetrated by cables…” It further states that, “a cable transit consists of a metal frame, box or coaming, a sealant system or material, and the cables…”


New Generation Cable Transits Designed to Embrace Change

One thing is for certain when it comes to technology, change is inevitable. As newer generation technology becomes available to support sophisticated data and communication networks, quite often the network cabling must be modified or replaced. In structured cabling parlance, such modifications are referred to as cable Moves, Additions, or Changes, or MAC work. While…


New European Warehouse Added in Rotterdam

STI Marine is pleased to announce the addition of their new distribution center location in Rotterdam, Netherlands. This new warehouse location will help ensure faster response time for product delivery in local markets and improve efficiency with European shipyards.


Passenger Ship Technology: Self-Sealing Cable Transits

Now featured on Passenger Ship Technology! Self-sealing cable transits are the future of wireless internet networks on cruise ships, explain STI Marine’s Ruben Wansink and James P Stahl. Cruise lines have invested millions of dollars in infrastructure to provide wireless internet access for customers. New generation technology platforms require network cabling modification, and the one…


STI Marine Unveils New Website

STI Marine Unveils New Website to Enhance User Experience for Ship Owners and Engineers Improvements Include More User-Intuitive Search Function and Mobile Optimization SOMERVILLE, NEW JERSEY (Dec. 13, 2016) – STI Marine, a division of Specified Technologies Inc. (STI), has unveiled its latest website, The website was created to support the company’s ongoing offering…


Foil-Pack or Sausage Packaging Reduces Shipyard Waste

Most caulks or sealants are still dispensed via the traditional caulk or adhesive cartridge. The typical cartridge consists of a plastic tube, nozzle, and plunger. While these are convenient and easy to use, they do contribute to waste in the shipyard. On a large vessel build where several thousand cartridges may be required, it can…


Watertight Sealing with Ease and Flexibility

The demand for cabling onboard vessels has increased substantially. Watertight firestopping systems featuring the use of liquid-applied sealants have gained in popularity. Often these types of transit systems will allow a greater fill percentage of cable through a smaller footprint. They will also allow for irregular cable spacing or cables that do not necessarily traverse…

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