Welcome to C-Stevenson Engineering
Craig Stevenson-IEng-IMarEng-Chief Engineer (unlimited)
Director / Marine Engineer
Phone / WhatsApp +44 (0) 7916 294 925
Examples of experience
Designed and installed 12x OWS systems
Example 1
Complete fleet upgrade of oily water separators to comply with MARPOL regulations.
​
During six years as a fleet project manager, designed and project managed 12 OWS systems (among many other projects) to comply with MEPC 107 (49) MARPOL regulations. Reviewing existing systems, then designed new ones that incorporated updated machinery.
​
Managing these projects from initial concept through Class approvals, design appraisal submissions, installation, and final commissioning.
For each installation I personally traced every pipe and flange, preparing accurate diagrams and piping plans for contractors. These ensured correct installation and gave me precise material requirements. I also created clear, colorful P&IDs that were easy to follow — unlike the vague, code-heavy new-build drawings that often confuse crews.
Example 2
Designed and installed an alarm & monitoring system
Development of a customized alarm and monitoring system for a vessel with no automation in place.
On one vessel we found there was no proper alarm, monitoring, or automation system — only a few basic Autronica alarm cards.
The solution was to designed a tailored control system to meet the machinery plant and vessel requirements. Using simple relays, we incorporated visual and audible alarms, along with status indication. Working with a trusted contractor, Contractors then produced an enclosure and a reliable alarm panel that delivered the necessary protection and monitoring to C Stevenson Engineering design.
Example 3
Designed and installed 5x BWTS systems
Delivery of ballast water treatment plants across five cruise vessels, including two in service.
We project managed five ballast water treatment systems on large cruise ships, managing the projects through Class approvals, design, installation, and commissioning. Two vessels were in service, which added complexity.
Please note; these all drawings and designs were produced by C Stevenson Engineering
​
Each ship required detailed tracing as their piping systems had been heavily modified. We prepared accurate diagrams and designed a new automation operator layout, helping the automation engineers program interlocks effectively.
​
One key success was saving significant cost: instead of integrating into the vessel’s global hydraulic actuator system. we created a valve interface using pneumatic actuators and the ship’s control air.
This was far cheaper than adding more valve cards or hydraulic actuators and worked reliably.
​
Re-construction of Potable water manifold
Example 4
Emergency redesign of a failed potable water system during dockyard refit.
Onboard a vessel, a replacement potable water system went out of control when unsuitable pipes were supplied. We raised the issue, and at short notice was tasked with supervising and fabricating a new manifold using ship and yard stock (+GF Instaflex and Cunifer #10).​
This was whilst I was managing 2 other projects at the same time
Despite the limited materials, I reconstructed the system quickly so the vessel could depart on time — all while managing two other projects simultaneously.
I have put a few shots of my notepad whilst trying to figure out how to put this jigsaw back together
Interior refit project involving installation of additional passenger seating and compliance approvals.
​
On a Ro-Ro vessel we supervised the installation of extra seating in three areas. Although this appeared simple, we had to produce drawings for Class and Flag, carry out an evacuation study, and amend various vessel drawings.
​
The challenge was ensuring seating dimensions did not create a cramped “aircraft-style” layout. I also had to source appropriate furnishings and finishes. Projects like this leave no margin for error — interior work must meet both Class and habitability standards.
This gave me valuable experience with interior layouts and compliance requirements including the commissioning of a new evacuation study by a 3rd party.
​
Example 7
Example 8
Inventory of Hazardous Materials surveys to meet international recycling regulations.
​
We arranged IHM surveys for six vessels in line with the Hong Kong Convention 2009. These studies ensured the vessels would receive Class IHM certification, preventing unexpected costs or compliance issues when the ships are eventually recycled.
Instalation of new serv air comps and dessicant dryer
Example 9
This was one of our favorite projects as we get to make the system out of Press Fit (which is crimp-able Stainless pipe) such as Chibro, PressTec and all sorts of other brand names, as it looks very tidy once done.
This interested me as it was the first time we had come across one of these desiccant type dryer machines
This was not as simple as it looked, as the machines were too large to fit down the engine hatch and required disassembly first, then careful reassemble followed by the careful task of ensuring the delta contactor rotates the motor in the same direction as the start contactor as this would easily destroy a screw type compressor or do some major damage on the rotor, small details like this can be the difference between total success and total disaster.
installation survey of new FOPX machines
Example 10
Feasibility and layout survey for new fuel purifier systems.
​
While surveying another upgrade, we were asked to explore replacing the vessel’s original fuel purifiers with modern SU866-type units. In a single afternoon we lifted all the floor plates, gathered the information, and produced computerized layout drawings.
This allowed the shipowner to see clear options and attach proper plans to a CAPEX request or modification proposal. Having accurate drawings makes far more impact than words alone.
Example 8
Example 11
New BWTS Automation
This was an odd one as I was more used to Praxis, ABB, Siemens and Kongsburg automation systems, however this vessel had ValMarine which we had seen only once on a ferry many years ago.
Automation programming is very expensive and if you can prepare your requirements as I show below it will save a fortune as the description is clear from an operators point of view and the logic required is explained relatively well so this can be prepared in advance without having shipboard crew trying to explain to an automation engineer onsite certain functionality they may require, all I would require is a photo of the screen and a description of what you are after
Furthermore, the layout being prepared by some one who has been an operator of the system can make sure it is crystal clear for operators of the system to use, as the amount of ships I have been on I have seen some very vague process pages that do not really show the machine elements or the process they are governing are not clear, as from an automation engineer point of view yes, but a marine engineering or nav officer, then no.
Example 5
increase PC on vessel in three areas
Example 6
Upgrade of Radars, satellite compass and AIS systems
Replacement of outdated navigational aids across multiple vessels.
​
We replaced five satellite compasses, eight AIS systems, and six radars across several ships. The main challenge was understanding how each navigation aid was interconnected — which systems carried regular data versus high-speed data, and how they communicated.
We used multiplexers where necessary to ensure compatibility so that all systems could still share information and function together.
Replacement of emergency diesel generator engines
This was an obsolescence project on 2x small ferry's as the engines that were currently installed were of a Lister peter type that were total out of production and if the emergency engine were to fail its weekly test or break down in any major way it would cause this vessel to be out of service till a new engine could be fitted,
So be being a new engine it will need a new control system, and being an emergency engine you needed a bespoke system that will allow the engine to run its self to destruction which the majority of engine control manufactures are not interested in, then you have to push it though class and flag with plan approvals and a design appraisal document as well as having a type approved engine/alternator that you can equip with two modes of starting.