Lynn Princess
November 27, 2019
Cardiff Diesel Services – Pump Engine
November 8, 2019


New (replacement) Multirole workboat for Guernsey Harbour Authorities.

ProjectProject to replace an existing multirole workboat with a new vessel, with extended capabilities by combating the working restrictions causing by existing machinery limitations with the previous vessel.

The Boatbuilder required a full engine room package with reliability at the forefront of the selection process.

The tender stated the need for a bollard pull figure which lead us to Doosan’s new 4L126TIH engine with a continuous duty rating and providing a combined output of 900hp.

A requirement for an auxiliary engine that could provide power for electrical and hydraulic power which did not require seawater cooling provided us with the chance to showcase our in house set building capabilities. After discussions to understand the customers’ needs we were able to deliver a bespoke auxiliary set to meet the customer requirements without any compromise.

  • 2 x Doosan 4L126TIH Engine (450Hp) + D-I DMT240H 2.93:1 Gearboxes
  • Engine side rail frame to facilitate hydraulic pump mounting on fore end of 1 engine
  • 2” PTO shaft
  • AV Mounts
  • JMP M50LPL 2” 24v clutched deck wash pump driven from fore end of the engine
  • 1 x Doosan AD136TI for auxiliary powerpack
  • (converted to radiator cooling with water jacketed exhaust manifold, fan guards and cooling fan, all mounted on welded base frame and 4 point lifting and AV mounts)
  • JMP M40LH 1.5” 24v clutched deck wash pump
  • 1 X D-I DPO 087 twin output clutched power take off, close coupled to engine flywheel driving Meccalte alternator and customers supply hydraulic pump
  • Products Used


    Doosan 4L126TIH

    450Hp - Inline 6 - 11 Litre


    Doosan AD136TI

    157 Hp - Inline 6 - 8 Litre


    D-I DMT144H



    D-I DPO 087

    Twin output


    JMP M40LH

    24v Clutch

    Our new Sarnia workboat built by Meercat Boats was formally named and blessed today!

    Posted by Guernsey Harbours on Tuesday, October 15, 2019
    • Kevin
      I found out about Watermota and Doosan engines through a friend in the industry who installed a L136 unit and D-I Industrial DMT100HL gearbox in there under 10mtr trawler. He mentioned the fuel economy was great, and the boat towed well at low rpms coupled with the fact a spanner had not touched the engine in 10000 hours. I decided to order the same package with a slightly different gearbox ratio to suit my propeller. I have found a fuel saving of around 40 percent on my old engine and plenty of spare power to do what is required in the fishery. The customer service has been excellent with direct and detailed advice given throughout the installation and commissioning.
    • George
      I would like to thank you for your prompt response this morning. Your engineer was very helpful and professional. Due to your quick response we were ready to get back to work within 3 hrs of our phone call at 08.00 this morning. A big thanks from the Megan M.
      Skipper Megan M
    • Steve H
      Pump ordered yesterday, arrived DHL this morning. All good, great service thanks!
      Steve H
    • Shaun Kay
      We would just like to say a massive thank you to everyone involved with the rebuild of our engine, it was a first-class job and the customer service and aftercare since the purchase of our engine from you really have been second to none. We will definitely be recommending you to our friends in the fishing industry and look forward to doing further business with you in the future. Thank you again for everything.
      Shaun Kay
      Serene Skye Fishing
    • We have been dealing with Watermota for the past 4 years. In that time, they have been very helpful to us. The knowledge of the range of products they sell is amazing. Their staff are effecient and friendly and give great advice over the phone to the skipper doing repairs in port. When you order the items, the staff make sure that the parts get sent out fast, this means less "downtime" for skippers and crew. We would not hesitate to recommend Watermota main office in the UK or their dealer in Northern Ireland, Mr. Garry Brown.
    • We are a small workboat builder in Hythe Southampton building vessels from 10 to 24m. We have always fitted Doosan engines to our vessels due to the robust nature of the engines. Watermota are our local Doosan dealer and we are very impressed with the service we gain from them. Watermota work closely with us to make sure the engines we fit to our vessel are the most appropriate for the vessel. Even through the design stage of the build they are very helpful and willing to give us advice on how to make sure that the engines have what they need. The engines are delivered to us on time, and if for some reason there is a delay they keep us aware of the new date. At the end of the build they come on board to help commission the engines to make sure they are running correctly. The whole prosses is very easy for us. After we hand the vessels over to the clients, Watermota are always happy to help them solve issues.
    • We have the peace of mind that Watermota will do their very best to help us and always pull out all of the stops, Top quality service!
    • James from Watermota called me back to tell me that the part would leave within 30 minutes and be driven directly to the vessel, he provided all of the carrier details as well as a contact number for the delivery driver and double checked that I had all of the parts needed to complete the repair, right down to the last bolt. We had the vessel back in service that night, which was exactly what we needed.
    • I rang Watermota at 13:30 explaining that the vessel needed to be back in service by 6am the next morning and the part was urgently required. After speaking to the Sales team and explaining the importance of the contract they did everything they could to help, from taking the part off a stock engine to arranging same day transport.
    • Our company operates a fleet of commercial fishing vessels based in the the south west. We have always received excellent service support for our Doosan engines from Watermota, planned maintenance or unscheduled repairs are always dealt with quickly and efficiently.
    • Just thought I’d drop you an email to say how happy I am with my engine packages. I took fuel for the first time this evening and after calculating our miles covered we came to an average consumption of 3.25 litres per mile at a cruising speed of 15 knots at 1800 rpm. This is far better than we expected, our old engines only gave us a cruise of 12knts for the same consumption. We’ve gone from 6L 185hp to 8L 230hp engines making the boat gain speed and reliability but without an increase in fuel consumption. Coupled with the fantastic customer service throughout the process and huge list of extras included in the package, Watermota/Doosan certainly come out on top. With many plans for more boats in the future, unless another company can top that they will all be Doosan powered.
    • I would like to thank you and all the team at Watermota for your recent help with a very large order I received and with a short lead time to get it completed. From receiving quotes promptly to processing the orders and organizing direct delivery to my client in a small time frame Watermota were always on hand to help nothing was too much trouble.
    • We have been using Watermota to provide us with Doosan engines for several years and their level of service and support exceed expectations.
    • It’s been a pleasure doing business with you, you’re all on the ball and always reply to our queries quickly which is very much appreciated.