# Marine Engineering **URL:** https://forum.gcaptain.com/c/engineering/marine-engineering/19.md [Latest](https://forum.gcaptain.com/latest.md) · [Categories](https://forum.gcaptain.com/categories.md) · [Tags](https://forum.gcaptain.com/tags.md) --- ## [About the Marine Engineering category](https://forum.gcaptain.com/t/about-the-marine-engineering-category/25)
**Author:** [@system](https://forum.gcaptain.com/u/system)\ **Replies:** 0\ **Last updated:** [February 18, 2017, 12:41pm UTC](https://forum.gcaptain.com/t/about-the-marine-engineering-category/25 "2017-02-18T12:41:56Z")
--- ## [IHI AT14 turbocharger Manual](https://forum.gcaptain.com/t/ihi-at14-turbocharger-manual/74572)
**Author:** [@Fizul\_Ahasun](https://forum.gcaptain.com/u/Fizul_Ahasun)\ **Replies:** 1\ **Last updated:** [September 16, 2026, 11:49am UTC](https://forum.gcaptain.com/t/ihi-at14-turbocharger-manual/74572 "2026-09-16T11:49:17Z")
Hello everyone, I’m looking for a free PDF of the IHI AT14 turbocharger Operation & Maintenance Manual (model TRB02‑001) for maintenance and spare parts reference. I’ve searched online but haven’t found a public downlo… --- ## [Future marine fuels](https://forum.gcaptain.com/t/future-marine-fuels/50834)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 372\ **Last updated:** [September 14, 2026, 10:09am UTC](https://forum.gcaptain.com/t/future-marine-fuels/50834 "2026-09-14T10:09:50Z")
The subject of which fuel will be used by the worldwide marine industry in the future has been discussed in different threads before. Time to get it under one umbrella. Here is first instalment; Hydrogen or Methanol: … --- ## [Fastest Way To Get 180 Days of Engine Seatime From Entry-Level](https://forum.gcaptain.com/t/fastest-way-to-get-180-days-of-engine-seatime-from-entry-level/77244)
**Author:** [@InternetSandwich33](https://forum.gcaptain.com/u/InternetSandwich33)\ **Replies:** 13\ **Last updated:** [September 5, 2026, 8:11pm UTC](https://forum.gcaptain.com/t/fastest-way-to-get-180-days-of-engine-seatime-from-entry-level/77244 "2026-09-05T20:11:32Z")
Hello Mariners, I’m going to graduate with an ABET-accredited Mechanical Engineering degree in December 2027. I’m going to pursue a career in the Merchant Marine as an engineer for many reasons, and I want to plan ahead… --- ## [Electric ships](https://forum.gcaptain.com/t/electric-ships/52325)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 84\ **Last updated:** [August 30, 2026, 1:19pm UTC](https://forum.gcaptain.com/t/electric-ships/52325 "2026-08-30T13:19:52Z")
Japan it not going to be left behind in the race to develop new green maritime technolog: The first electric powered ferry has already entered service: --- ## [New functions to support navigation](https://forum.gcaptain.com/t/new-functions-to-support-navigation/68294)
**Author:** [@curious\_engineer](https://forum.gcaptain.com/u/curious_engineer)\ **Replies:** 30\ **Last updated:** [February 12, 2024, 10:50am UTC](https://forum.gcaptain.com/t/new-functions-to-support-navigation/68294 "2024-02-12T10:50:14Z")
Hi everyone. I’m considering developing a new tool for making navigating at sea safer, simpler and more efficient. In my opinion ECDIS is a great tool for basic navigational tasks, but with the technology we have today t… --- ## [When starting air turns EXPLOSIVE](https://forum.gcaptain.com/t/when-starting-air-turns-explosive/76543)
**Author:** [@Handspake](https://forum.gcaptain.com/u/Handspake)\ **Replies:** 4\ **Last updated:** [July 21, 2026, 10:05am UTC](https://forum.gcaptain.com/t/when-starting-air-turns-explosive/76543 "2026-07-21T10:05:11Z")
Not my turf but may be gCapt engine department may leave some comments here. https://msiu.gov.mt/wp-content/uploads/2026/03/MV-CMA-CGM-Shanghai\_Final-Simplified-Safety-Investigation-Report.pdf --- ## [More bunker fuel problems](https://forum.gcaptain.com/t/more-bunker-fuel-problems/66660)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 8\ **Last updated:** [July 19, 2026, 3:06am UTC](https://forum.gcaptain.com/t/more-bunker-fuel-problems/66660 "2026-07-19T03:06:55Z")
Bad bunker fuel is a recurring problem and Houston appears to be the source again: Is it residue from fracking fluid or are somebody getting rid of troublesome waste the cheap way? Bunker contamination may be more wi… --- ## [“Lubricating” ships hull with air bubbles](https://forum.gcaptain.com/t/lubricating-ships-hull-with-air-bubbles/74059)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 26\ **Last updated:** [March 22, 2026, 8:57pm UTC](https://forum.gcaptain.com/t/lubricating-ships-hull-with-air-bubbles/74059 "2026-03-22T20:57:11Z")
Amazing how much of modern inventions originate by learning from nature’s fauna and flora. Here is an example: --- ## [Standard Naval vessel designs](https://forum.gcaptain.com/t/standard-naval-vessel-designs/74254)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 0\ **Last updated:** [February 13, 2026, 9:58pm UTC](https://forum.gcaptain.com/t/standard-naval-vessel-designs/74254 "2026-02-13T21:58:35Z")
Twin visions — proposed designs for the Royal Norwegian Navy’s standardised vessels from Kongsberg Maritime (top) and Ulstein (bottom). Images: Kongsberg/Ulstein --- ## [Wärtsilä RT-Flex & WinGD Engines: Pros, Cons, and Real-World Issues](https://forum.gcaptain.com/t/wartsila-rt-flex-wingd-engines-pros-cons-and-real-world-issues/73957)
**Author:** [@Nik](https://forum.gcaptain.com/u/Nik)\ **Replies:** 1\ **Last updated:** [January 28, 2026, 6:46pm UTC](https://forum.gcaptain.com/t/wartsila-rt-flex-wingd-engines-pros-cons-and-real-world-issues/73957 "2026-01-28T18:46:24Z")
I’d like to start a discussion about Wärtsilä RT-Flex and WinGD two-stroke engines, based mainly on real shipboard experience, not marketing or textbook theory. I’ve been working with these engines since 2006, and over … --- ## [The Wave-Powered Paradigm: A Zero-Fuel Autonomous Cargo Vessel (Open Source)](https://forum.gcaptain.com/t/the-wave-powered-paradigm-a-zero-fuel-autonomous-cargo-vessel-open-source/73955)
**Author:** [@GoranSkoog](https://forum.gcaptain.com/u/GoranSkoog)\ **Replies:** 38\ **Last updated:** [January 19, 2026, 5:57pm UTC](https://forum.gcaptain.com/t/the-wave-powered-paradigm-a-zero-fuel-autonomous-cargo-vessel-open-source/73955 "2026-01-19T17:57:22Z")
Autonomous Hybrid Wave & Current Powered Bulk Cargo Concept – Energy-Driven Routing and Twisted Screw Hydrodynamics (Zenodo DOI) Hi all, I would like to share an open-source research concept for a zero-fuel autonomous … --- ## [Call for Peer Review: S.K.O.O.G. Framework – Autonomous Wave Energy Harvesting & Propulsion](https://forum.gcaptain.com/t/call-for-peer-review-s-k-o-o-g-framework-autonomous-wave-energy-harvesting-propulsion/74039)
**Author:** [@GoranSkoog](https://forum.gcaptain.com/u/GoranSkoog)\ **Replies:** 0\ **Last updated:** [January 16, 2026, 6:13pm UTC](https://forum.gcaptain.com/t/call-for-peer-review-s-k-o-o-g-framework-autonomous-wave-energy-harvesting-propulsion/74039 "2026-01-16T18:13:14Z")
I am formally inviting Naval Architects, CFD Engineers, and Hydrodynamicists to review the S.K.O.O.G. (Skoog Kinetic Orbital Oscillating Generator) framework. This is a professional, discipline-focused invitation aimed … --- ## [WinGD initiate newtechnology](https://forum.gcaptain.com/t/wingd-initiate-newtechnology/67700)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 6\ **Last updated:** [January 2, 2026, 10:56am UTC](https://forum.gcaptain.com/t/wingd-initiate-newtechnology/67700 "2026-01-02T10:56:38Z")
Somebody here should know what all this means: --- ## [How did you become a good engineer?](https://forum.gcaptain.com/t/how-did-you-become-a-good-engineer/72025)
**Author:** [@Chubu](https://forum.gcaptain.com/u/Chubu)\ **Replies:** 15\ **Last updated:** [January 2, 2026, 10:48am UTC](https://forum.gcaptain.com/t/how-did-you-become-a-good-engineer/72025 "2026-01-02T10:48:46Z")
Was it a particular job? Did school make all the difference? Was it a mentor? Was it professional classes? Was it a lifelong habit of reading manuals and textbooks? --- ## [Dual Fuel Engines](https://forum.gcaptain.com/t/dual-fuel-engines/64066)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 5\ **Last updated:** [December 31, 2025, 2:05pm UTC](https://forum.gcaptain.com/t/dual-fuel-engines/64066 "2025-12-31T14:05:02Z")
--- ## [Gyrocompass Manual Request](https://forum.gcaptain.com/t/gyrocompass-manual-request/69054)
**Author:** [@thadwald](https://forum.gcaptain.com/u/thadwald)\ **Replies:** 5\ **Last updated:** [December 19, 2025, 7:38pm UTC](https://forum.gcaptain.com/t/gyrocompass-manual-request/69054 "2025-12-19T19:38:03Z")
Hi, I am a teacher who was recently gifted a SR-130 Sperry/Tokyo Keiki Gyrocompass. This was built in 1982 and apparently decommissioned around 1995, and has been sitting in storage since then. It appears to be in relat… --- ## [Are engineers limited to ship size/tonnages?](https://forum.gcaptain.com/t/are-engineers-limited-to-ship-size-tonnages/69407)
**Author:** [@ambitionedge](https://forum.gcaptain.com/u/ambitionedge)\ **Replies:** 38\ **Last updated:** [November 30, 2025, 3:33pm UTC](https://forum.gcaptain.com/t/are-engineers-limited-to-ship-size-tonnages/69407 "2025-11-30T15:33:45Z")
I called the SIU academy to ask if the qmed comes with an unlimited endorsement but nobody seems to know anything about the industry (despite teaching future mariners, go figure). They said that limited and unlimited onl… --- ## [Power strip help](https://forum.gcaptain.com/t/power-strip-help/73647)
**Author:** [@wmoser](https://forum.gcaptain.com/u/wmoser)\ **Replies:** 4\ **Last updated:** [November 16, 2025, 2:22pm UTC](https://forum.gcaptain.com/t/power-strip-help/73647 "2025-11-16T14:22:27Z")
I’m trying to order power strips for our vessel being mindful of the Marine Safety Alert 03-13b. I’m having a hard time finding ‘marine rated’ or ‘wheelmark’ power strips or whatnot. Schneider used to make a MPS-E6 Mar… --- ## [Issue with Marinfloc CD5?](https://forum.gcaptain.com/t/issue-with-marinfloc-cd5/72307)
**Author:** [@3rdBoff](https://forum.gcaptain.com/u/3rdBoff)\ **Replies:** 0\ **Last updated:** [April 7, 2025, 7:15pm UTC](https://forum.gcaptain.com/t/issue-with-marinfloc-cd5/72307 "2025-04-07T19:15:48Z")
Hi all, Has anyone got any experience with the Marinfloc Emulsion Splitting Unit CD5? Normally it is operating okay but today it has just randomly ran into some troubles. When starting it initally goes to through the … --- ## [Methanol-powered ships?](https://forum.gcaptain.com/t/methanol-powered-ships/72247)
**Author:** [@ChaplainDarrell](https://forum.gcaptain.com/u/ChaplainDarrell)\ **Replies:** 7\ **Last updated:** [April 4, 2025, 4:07pm UTC](https://forum.gcaptain.com/t/methanol-powered-ships/72247 "2025-04-04T16:07:15Z")
Just wondering as an old snipe, I see that there will be methanol-powered ships built. What kind of fuel efficiency would a ship like this get? How much methanol would a ship need to get to ports halfway around the world… --- ## [Back to all DC electric grid on ships](https://forum.gcaptain.com/t/back-to-all-dc-electric-grid-on-ships/72108)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 17\ **Last updated:** [March 26, 2025, 11:30am UTC](https://forum.gcaptain.com/t/back-to-all-dc-electric-grid-on-ships/72108 "2025-03-26T11:30:08Z")
Will the all DC electric grid of my young and tender days be back on ships in the future?: PS\> I know that DC grid for propulsion motors and other major equipment has been around, especially for various OSV, for some … --- ## [Day Rate Expectations](https://forum.gcaptain.com/t/day-rate-expectations/72009)
**Author:** [@LogisticsGuy](https://forum.gcaptain.com/u/LogisticsGuy)\ **Replies:** 40\ **Last updated:** [March 8, 2025, 6:59pm UTC](https://forum.gcaptain.com/t/day-rate-expectations/72009 "2025-03-08T18:59:13Z")
I’d like to get others opinions on day rates. One of our vessels requires DDE4000 or Unlimited as well as OICEW. We’re a small business and our day rates are hard to compete with Union / GOM expected rates, however, we o… --- ## [Saf acid](https://forum.gcaptain.com/t/saf-acid/71552)
**Author:** [@jimrr](https://forum.gcaptain.com/u/jimrr)\ **Replies:** 7\ **Last updated:** [January 10, 2025, 3:43pm UTC](https://forum.gcaptain.com/t/saf-acid/71552 "2025-01-10T15:43:46Z")
maybe it was spelled ‘‘safe acid’’ but was a blue powder that came in a blue 5 gallon bucket. One mixed it with water (hot water worked better) and it’d clean most anything you put in it but wouldn’t hurt wood, rubber … --- ## [Hatteras fuel tank selector manifold](https://forum.gcaptain.com/t/hatteras-fuel-tank-selector-manifold/71337)
**Author:** [@Ranger1](https://forum.gcaptain.com/u/Ranger1)\ **Replies:** 16\ **Last updated:** [December 17, 2024, 1:44am UTC](https://forum.gcaptain.com/t/hatteras-fuel-tank-selector-manifold/71337 "2024-12-17T01:44:23Z")
Anyone on board that can explain how one of these works? It is on a 90 foot Hatteras sportfish and I am trying to make sense of it. Thanks! --- ## [Magnetic gear system](https://forum.gcaptain.com/t/magnetic-gear-system/71065)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 5\ **Last updated:** [November 5, 2024, 11:44am UTC](https://forum.gcaptain.com/t/magnetic-gear-system/71065 "2024-11-05T11:44:19Z")
--- ## [Machine shop rules](https://forum.gcaptain.com/t/machine-shop-rules/69709)
**Author:** [@CoastalAggie19](https://forum.gcaptain.com/u/CoastalAggie19)\ **Replies:** 6\ **Last updated:** [November 3, 2024, 4:38pm UTC](https://forum.gcaptain.com/t/machine-shop-rules/69709 "2024-11-03T16:38:59Z")
Ive been somewhat tasked with getting the machine shop and welding shop set up on a new vessel. Of course most equipment was installed before delivery however it wasnt really organized for good work flow and organization… --- ## [Six years?](https://forum.gcaptain.com/t/six-years/71006)
**Author:** [@ChaplainDarrell](https://forum.gcaptain.com/u/ChaplainDarrell)\ **Replies:** 1\ **Last updated:** [October 25, 2024, 2:39pm UTC](https://forum.gcaptain.com/t/six-years/71006 "2024-10-25T14:39:15Z")
Pardon me if I’m mistaken but I just read where the Army got a new ship in six years. Meanwhile, I continue to beat the dead horse. A new ship in six years and the Coast Guard apparently can’t even get a set of blueprint… --- ## [USCG exam workbooks](https://forum.gcaptain.com/t/uscg-exam-workbooks/70430)
**Author:** [@Engineer08](https://forum.gcaptain.com/u/Engineer08)\ **Replies:** 6\ **Last updated:** [September 1, 2024, 4:52pm UTC](https://forum.gcaptain.com/t/uscg-exam-workbooks/70430 "2024-09-01T16:52:17Z")
I’m in process of upgrading my license, I have been studying the Mariner Advancement but I’m looking to learn a little more on the theory of the topics to better understand. I’m looking to test for DDE Unlimited. I have … --- ## [Non-rotating rotor sails](https://forum.gcaptain.com/t/non-rotating-rotor-sails/70317)
**Author:** [@ombugge](https://forum.gcaptain.com/u/ombugge)\ **Replies:** 5\ **Last updated:** [August 11, 2024, 3:41pm UTC](https://forum.gcaptain.com/t/non-rotating-rotor-sails/70317 "2024-08-11T15:41:52Z")
Not sure I understand how this works. How does the air get “sucked in and pressurized” without using fan(s) or without using some form of power? Anybody have any info? [Next page](https://forum.gcaptain.com/c/engineering/marine-engineering/19.md?page=1)