Flettner Rotors: What They Actually Do

Saving the Oceans vs. Surviving a Ship Fire: The Truth About F3 Foams

Starting January 1, 2026, the International Maritime Organization (IMO) is banning firefighting foams containing PFOS, a toxic "forever chemical" on all ships worldwide. But is the maritime industry actually ready for the alternatives? In this episode, we dive deep into the tension between protecting the marine environment and ensuring shipboard fire safety. For decades, PFOS-based foams (like AFFF) were the gold standard at sea because they quickly formed a fuel-resistant film that thrived in harsh saltwater conditions. Now, they are being phased out globally due to their harmful, non-biodegradable nature.While eliminating "forever chemicals" is a massive win for our oceans, the new generation of Fluorine-Free Foams (F3) brings dangerous hidden risks. We explore why these new F3 foams lack the vital fuel-sealing film, making them highly sensitive to burnback and high winds out on the open deck. We also discuss why simply swapping the chemicals isn't enough, your ship's current proportioners and systems might not even be compatible with these new, thicker concentrates. Detailed Analysis on - https://thedeepdraft.com/2025/10/10/pfos-in-firefighting-foam-what-the-imo-2026-ban-means-for-ships/ [https://thedeepdraft.com/2025/10/10/pfos-in-firefighting-foam-what-the-imo-2026-ban-means-for-ships/] This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit thedeepdraft.substack.com [https://thedeepdraft.substack.com?utm_medium=podcast&utm_campaign=CTA_1]

Command vs Conn: Why the Master’s Authority Is Never Shared

In pilotage waters, one misunderstood word can blur the line between advice and authority. This DeepDraft video looks at the common claim that a pilot “has the Conn” during pilotage. In merchant shipping, that phrase creates more confusion than clarity. The pilot advises. The Master commands. The Officer of the Watch executes under the Master’s authority. That distinction is not academic. It affects bridge team management, pilotage practice, SMS language, inspection findings, and legal accountability after an incident. The full article explains why command is continuous, indivisible, and never transferred, even when a compulsory pilot is onboard. It also explains why inspectors, auditors, and bridge teams should be careful with naval language that has no proper place in merchant ship pilotage procedures. Read the full DeepDraft analysis here: https://thedeepdraft.com/2025/09/18/command-vs-conn-why-the-masters-authority-is-never-shared/ [https://thedeepdraft.com/2025/09/18/command-vs-conn-why-the-masters-authority-is-never-shared/?utm_source=chatgpt.com] This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit thedeepdraft.substack.com [https://thedeepdraft.substack.com?utm_medium=podcast&utm_campaign=CTA_1]

MEPC 84 Changed the Map, Not the Rule

A short DeepDraft technical briefing on what MEPC 84 actually changed for ships. The IMO Net-Zero Framework remains unresolved, but the North-East Atlantic ECA is moving toward enforcement from 2028. For Masters, Chief Engineers and operators, the issue is practical: fuel planning, changeover timing, tank segregation, MARPOL samples, engine-room records and Port State Control exposure. Full analysis: https://thedeepdraft.com/2026/05/18/mepc-84-outcomes-new-eca-and-carbon-framework-delays/ [https://thedeepdraft.com/2026/05/18/mepc-84-outcomes-new-eca-and-carbon-framework-delays/] This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit thedeepdraft.substack.com [https://thedeepdraft.substack.com?utm_medium=podcast&utm_campaign=CTA_1]

MEPC 84 Changed the Map, Not the Rule

MEPC 84 left the IMO Net-Zero Framework unresolved, but one decision is already moving toward ships: the North-East Atlantic ECA. From 2028, this becomes a practical operating issue across North Atlantic and European trades. The sulphur rule is familiar. The geography is larger. That means earlier fuel planning, safer changeover timing, cleaner tank management, stronger records and sharper Port State Control exposure. This video is based on the full DeepDraft analysis. Full analysis: https://thedeepdraft.com/2026/05/18/mepc-84-outcomes-new-eca-and-carbon-framework-delays/ [https://thedeepdraft.com/2026/05/18/mepc-84-outcomes-new-eca-and-carbon-framework-delays/] This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit thedeepdraft.substack.com [https://thedeepdraft.substack.com?utm_medium=podcast&utm_campaign=CTA_1]

DeepDraft Weekly Brief | May 17, 2026: Hormuz Enters Permissioned Transit & ECDIS Competence Risks

The Strait of Hormuz has officially shifted from a high-risk passage to a strict permissioned transit phase, requiring commercial vessels to coordinate directly with naval authorities. In this Master Mariner's operational update, we break down how expanded control measures and rising insurance uncertainty are impacting global shipping routes. For masters, ship managers, and operators, surviving this phase of geopolitical disruption requires more than just paper compliance, it demands verifiable bridge competence and operational readiness Detailed Analysis On - https://thedeepdraft.com/2026/05/17/deepdraft-weekly-maritime-brief-may-17-2026-hormuz-transit-now-requires-permission/ [https://thedeepdraft.com/2026/05/17/deepdraft-weekly-maritime-brief-may-17-2026-hormuz-transit-now-requires-permission/] This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit thedeepdraft.substack.com [https://thedeepdraft.substack.com?utm_medium=podcast&utm_campaign=CTA_1]