What This Module Covers & Why It Matters
Two types of exam questions are now being asked about this topic:
📘 Question Type 1
"What is Shipping Casualty? What is Marine Casualty? Distinguish between them."Answer based on MS Act 1958 — two separate terms, two separate Parts.
📗 Question Type 2
"What are the key changes / amendments in MS Act 2025 compared to 1958?"Answer requires knowing what changed — especially that "Shipping Casualty" is abolished.
This module covers both in one place. Read all tabs before your exam.
The Big Picture — At a Glance
| Term | MS Act 1958 | MS Act 2025 |
|---|---|---|
| Shipping Casualty | S.358, Part XII · 5 clauses · triggers court investigation | ABOLISHED — absorbed into Marine Casualty |
| Marine Casualty (investigation) | Not used for investigations in 1958 | S.231, Part XI · Main term now · 7 clauses · replaces Shipping Casualty |
| Marine Casualty (pollution) | S.356A, Part XIA · pollution/oil spill focus · environmental | Merged into S.231 definition (clauses f & g) |
| Maritime Casualty | Not defined | S.234, Part XII · Wreck chapter only · collision/stranding/damage to ship |
| Marine Incident | Not defined | S.224, Part X · Broadest umbrella · includes Marine Casualty + disaster + storms + more |
Core message: The 2025 Act abolishes "Shipping Casualty" and uses "Marine Casualty" as the single unified term for all casualty investigations — expanded from 5 clauses to 7.
📜 MS Act 1958 · Part XII · Section 358
Shipping Casualty — MS Act 1958
Shipping Casualty is precisely defined in Section 358(1) with 5 specific clauses. It triggers formal legal investigation and can lead to cancellation or suspension of a maritime officer's Certificate of Competency (COC).
📌 Section 358(1) — Exact Language
"For the purpose of investigations and inquiries under this Part, a shipping casualty shall be deemed to occur when —"
The Five Clauses — Section 358(1)(a) to (e)
- On or near the coasts of India, any ship is LOST ABANDONED STRANDED or MATERIALLY DAMAGED
- On or near the coasts of India, any ship causes loss or material damage to any other ship
- Any LOSS OF LIFE occurs by reason of any casualty happening to or on board any ship on or near the coasts of India
- In any place, any such loss/abandonment/stranding/damage occurs to or on board any INDIAN SHIP, and any competent witness is found in India
- Any INDIAN SHIP is lost or supposed to have been lost, and evidence is obtainable in India as to circumstances under which she proceeded to sea or was last heard of
Geographic Scope
Clauses (a)(b)(c)
Must be on or near the coasts of India. Applies to any ship — Indian or foreign.
Clauses (d)(e)
Can be anywhere in the world. But applies only to Indian ships.
Consequences (S.370)
If investigation proves wrongful act or default by master/mate/engineer → their COC granted by Central Government may be cancelled or suspended.
📜 MS Act 1958 · Part XIA · Section 356A
Marine Casualty — MS Act 1958 (Pollution Context)
In the 1958 Act, "Marine Casualty" is not independently defined. It appears only in the context of oil pollution prevention under Part XIA. The focus is entirely environmental — not about ships sinking or loss of life.
📌 Section 356A(1)(b) — Exact Language
"incidents of marine casualty or acts relating to such casualty occurring with grave and imminent danger to Indian coastline or related interests from pollution or threat of pollution in the sea by deliberate, negligent or accidental release of oil, ballast water, noxious liquid and other harmful substances into the sea including such incidents occurring on the high seas."
Key Features
- Involves release (or threat of release) of oil, ballast water, noxious liquids or other harmful substances into the sea
- Must pose grave and imminent danger to Indian coastline or related interests
- Can occur on the high seas — not limited to Indian territorial waters
- Covers DELIBERATE NEGLIGENT and ACCIDENTAL releases — all three
- Applies to oil tankers of 150 GRT or more and other ships of 400 GRT or more
- Warships and Government non-commercial ships are excluded
Key Distinction: Shipping Casualty (S.358) = loss of ship/life/property → investigation → COC action. Marine Casualty (S.356A) = pollution threat to environment → containment → regulatory action. Different Parts, different purposes, different consequences.
Quick Comparison — Both Terms Under 1958 Act
| Parameter | Shipping Casualty (S.358) | Marine Casualty (S.356A) |
|---|---|---|
| Part | Part XII — Investigations & Inquiries | Part XIA — Prevention of Pollution by Oil |
| Focus | Loss of ship, life, or property | Environmental pollution — oil/noxious substance |
| Definition style | 5 precise clauses (exhaustive) | Descriptive — used in context, not standalone defined |
| Ships covered | Any ship near Indian coast + Indian ships anywhere | Oil tankers ≥150 GRT, other ships ≥400 GRT |
| High seas? | Only for Indian ships (clauses d, e) | Yes — explicitly includes high seas |
| Govt. ships | No specific exclusion | Warships + Govt. non-commercial ships excluded |
| Consequence | Formal investigation → COC cancelled/suspended | Detention, penalties, pollution containment action |
| Reporting | Master reports to Central Govt. officer on arriving India | Governed by MARPOL / separate rules |
Memory Trick for 1958 Act:
Shipping Casualty → Section 358 → Ships sink/strand → Suspend COC
Marine Casualty → MARPOL → Mud/oil in sea → Marine environment
Shipping Casualty → Section 358 → Ships sink/strand → Suspend COC
Marine Casualty → MARPOL → Mud/oil in sea → Marine environment
Important: One incident can be BOTH. A tanker grounding near Mumbai causing an oil spill = Shipping Casualty (stranded near Indian coast, S.358) AND Marine Casualty (oil threat to coastline, S.356A) simultaneously.
What Changed: "Shipping Casualty" is Abolished
The Merchant Shipping Act 2025 (Act 24 of 2025) replaces the entire 1958 Act. The term SHIPPING CASUALTY does not appear anywhere in the 2025 Act. It is replaced by an expanded MARINE CASUALTY under Section 231, Part XI.
❌ Removed from 2025 Act
• "Shipping Casualty" (the term)• Part XII heading: "Investigations and Inquiries" → now Part XI
• Judicial Magistrate as investigation authority
• Assessors system (S.366)
• Seaman / Indian ship (largely replaced)
• "On arriving in India" reporting (no time limit)
✅ Added / Changed in 2025 Act
• "Marine Casualty" as the single unified term (S.231)• 7 clauses instead of 5 — two new clauses
• 24-hour reporting deadline (S.231(2))
• Technical Marine Safety Investigation body
• "Seafarer" replaces "Seaman" throughout
• "Vessel" replaces "Ship" as primary term
📜 MS Act 2025 · Part XI · Section 231
New Marine Casualty Definition — 7 Clauses
📌 Section 231(1) — MS Act 2025
"For the purposes of investigation and inquiries under this Part, a marine casualty shall be deemed to be an event or sequence of events that has resulted in any of the following and has occurred directly or in connection with the operations of Indian vessels and any other vessels, when —"
- On or near the coast of India, any vessel is lost, abandoned, stranded or materially damaged [Same as old clause a]
- On or near the coast of India, any vessel causes loss or material damage to any other vessel or to external infrastructure + EXTERNAL INFRASTRUCTURE
- Any loss of life or presumed loss of life ensues by reason of any casualty happening or otherwise, onboard any vessel, on or near the coast of India or its coastal waters + PRESUMED LOSS
- In any place, any such loss/abandonment/stranding/damage occurs to or onboard any Indian vessel and any competent witness is found in India [Same as old clause d]
- Any Indian vessel is lost or supposed to have been lost, and evidence is obtainable in India as to circumstances [Same as old clause e]
- BRAND NEW In any place within the coastal waters, pollution, or potential threat of pollution, or severe damage to the environment is caused by a vessel
- BRAND NEW A fire or explosion takes place on any Indian vessel anywhere in the world, OR on any vessel (Indian or foreign) while on or near the coast of India or its coastal waters
What changed: Clauses (a)–(e) are essentially the old Shipping Casualty clauses. Clause (f) absorbs the old Marine Casualty (pollution). Clause (g) adds fire/explosion — an entirely new coverage area.
Three New Terms in 2025 Act — Know All Three
S.224 · Part X
🌐 Marine Incident — Broadest umbrella. Any event endangering safety of vessel, persons or environment. Includes Marine Casualty, Marine Disaster, Very Serious Marine Casualty, storms, adverse weather and more.
S.231 · Part XI
🚢 Marine Casualty — The main investigation term. 7 clauses. Replaces Shipping Casualty. Triggers investigation by Central Govt. appointed body.
S.234 · Part XII
⛵ Maritime Casualty — Wreck chapter only. Collision, stranding or navigation incident causing material damage or imminent threat of damage to ship/cargo. Used solely for wreck & salvage provisions.
Common exam trap: "Maritime Casualty" and "Marine Casualty" are NOT the same in the 2025 Act. Maritime Casualty is only for the Wreck chapter (Part XII).
Structure Change — 1958 Parts vs 2025 Parts
📜 1958 Act — Selected Parts
Part I — PreliminaryPart IV — Certificates of Officers
Part V — Seamen
Part VI — Safety (SOLAS)
Part XIA — Oil Pollution (Marine Casualty)
Part XII — Investigations (Shipping Casualty)
Part XIII — Wreck & Salvage
Part XIV — Liability
Parts I–XVIII (18 Parts total, many inserted)
✅ 2025 Act — 15 Clean Parts
Part I — PreliminaryPart IV — Maritime Education & Training
Part V — Seafarers (MLC 2006)
Part VI — Safety & Security
Part VII — Prevention of Pollution
Part X — Marine Incident & Emergency Response 🆕
Part XI — Investigation on Marine Casualties
Part XII — Wreck & Salvage (Nairobi Conv.)
Part XIV — Penalties & Procedure
Other Key Terminological Changes
| Old Term (1958) | New Term (2025) | Reason |
|---|---|---|
| Ship | Vessel (primary term) | Consistent modern usage |
| Seaman / Seamen | Seafarer / Seafarers | Gender-neutral; aligned with MLC 2006 |
| Director General of Shipping | Director General of Maritime Administration | Broader mandate |
| Formal Investigation (Magistrate + Assessors) | Marine Safety Investigation (technical body) | Shift from judicial to technical/safety model |
| Report "on arriving in India" (no time limit) | Report within 24 hours of occurrence | Specific accountability |
| Master/pilot/harbour master must report | Owner/manager/operator/company/pilot/harbour master/master must report | Expanded responsibility |
Complete Side-by-Side: 1958 vs 2025
| Parameter | MS Act 1958 | MS Act 2025 |
|---|---|---|
| Main casualty term | Shipping Casualty (S.358) | Marine Casualty (S.231) — unified term |
| Number of clauses | 5 clauses (a–e) | 7 clauses (a–g) — 2 new added |
| New clause f | Not covered | Pollution/environmental damage in coastal waters |
| New clause g | Not covered | Fire or explosion on Indian vessel (anywhere) or any vessel near Indian coast |
| External infrastructure | Not mentioned | Added to clause (b) |
| Presumed loss of life | Not explicitly stated | Added to clause (c) |
| Reporting time | On arriving in India — no specific deadline | Within 24 hours of occurrence (S.231(2)) |
| Who must report | Master / pilot / harbour master | Ship owner, manager, operator, company, pilot, harbour master, master |
| Investigation authority | Judicial Magistrate (1st class) + 2–4 Assessors (S.361, 366) | Body appointed by Central Govt. under Safety Convention (S.231(5)) |
| Nature of investigation | Judicial / court-led process | Technical Marine Safety Investigation (IMO-aligned) |
| COC action | By court after formal investigation (S.370) | Central Govt. initiates admin action after investigation report (S.232) |
| Pollution casualty | Separate term in Part XIA (S.356A) | Merged into Marine Casualty clause (f) |
| "Ship" language | "Ship" throughout | "Vessel" as primary term |
| "Seaman" language | "Seaman/Seamen" | "Seafarer/Seafarers" (MLC 2006 aligned) |
| Wreck/Salvage convention | Not incorporated (Nairobi Conv. 2007 post-dates) | Part XII fully aligned with Nairobi Wreck Conv. 2007 |
| Emergency response | No dedicated framework | Part X — Marine Incident & Emergency Response + Nodal Authority |
| Seafarer welfare board | Not present | Seafarers' Welfare Board — S.5 |
| Compulsory insurance | Not mandated for marine incidents | S.229 — compulsory insurance for marine incident liability |
📜 MS Act 1958 · Sections 358–370
Procedure After Shipping Casualty — 1958 Act
1
Master Reports — S.358(2)
Master / pilot / harbour master must report on arriving in India (no time limit stated). Reports to officer appointed by Central Government.
2
Preliminary Inquiry — S.359
Officer may (discretionary) conduct preliminary inquiry and sends written report to Central Government.
3
Application to Court — S.360
Officer applies to empowered court for formal investigation. Mandatory if Central Government directs.
4
Formal Investigation — S.361 + S.366
Conducted by Judicial Magistrate (1st Class) or Metropolitan Magistrate with 2–4 Assessors (maritime/mercantile experts). One assessor must be merchant service experienced if COC cancellation is possible.
5
Court Report — S.369
Full report + evidence transmitted to Central Government → published in the Official Gazette.
6
COC Action — S.370
Master's / Mate's / Engineer's COC may be cancelled or suspended if wrongful act or default is proved by court.
📜 MS Act 2025 · Sections 231–232
Procedure After Marine Casualty — 2025 Act
1
Report Within 24 Hours — S.231(2)
Ship owner / manager / operator / company / pilot / harbour master / master must give notice to Central Govt. appointed officer within 24 hours of the occurrence.
2
Officer Informs & Begins Inquiry — S.231(3)
Officer must forthwith inform Central Government in writing AND proceed to make preliminary inquiry. (Mandatory — no longer discretionary.)
3
Preliminary Inquiry Report — S.231(4)
On completion, officer furnishes report to Central Government or other authority appointed by it.
4
Marine Safety Investigation — S.231(5) & (6)
Central Government may appoint a special technical body (aligned with Safety Convention) to conduct Marine Safety Investigation, ascertain causes and circumstances, and submit report.
5
Central Govt. Action — S.232
On receiving investigation report, if incompetency/misconduct/violation found: Central Govt. may (a) initiate administrative action, or (b) direct officer to initiate legal proceedings.
Biggest procedural shift: Old Act → Judicial Magistrate + Assessors (court-led criminal process). New Act → Technical body under Safety Convention (expert-led safety investigation). This is aligned with IMO's Casualty Investigation Code.
Procedure Comparison Table
| Step | 1958 Act | 2025 Act |
|---|---|---|
| Who reports | Master / pilot / harbour master | Owner, manager, operator, company, pilot, harbour master, master |
| Time to report | On arriving in India (no limit) | Within 24 hours of occurrence |
| Preliminary inquiry | Discretionary ("may") | Mandatory ("shall") |
| Investigation body | Judicial Magistrate + 2–4 Assessors | Central Govt. appointed technical body |
| Nature | Judicial / court process | Marine Safety Investigation (technical) |
| Final action | Court cancels/suspends COC (S.370) | Central Govt. initiates admin action or legal proceedings (S.232) |
| Report published | Official Gazette (S.369) | Report to Central Govt. (gazette publication not specifically stated in S.231–232) |
Exam Type 1 — "Distinguish Shipping Casualty from Marine Casualty"
This question is based on MS Act 1958. Answer using S.358 (Shipping Casualty) and S.356A (Marine Casualty). They are two different terms in the 1958 Act.
Answer Points (mention at least 6)
- Section: Shipping Casualty → S.358, Part XII (Investigations). Marine Casualty → S.356A, Part XIA (Pollution Prevention)
- Focus: Shipping Casualty focuses on loss/damage to ship/life/property. Marine Casualty focuses on environmental pollution — oil, ballast, noxious liquid into the sea
- Definition: Shipping Casualty is defined in 5 specific clauses. Marine Casualty in 1958 Act is descriptive — not clause-based
- Applies to: Shipping Casualty — any ship near Indian coast (clauses a,b,c) + Indian ships anywhere (d,e). Marine Casualty — oil tankers ≥150 GRT, other ships ≥400 GRT
- High seas: Marine Casualty explicitly includes high seas. Shipping Casualty includes high seas only for Indian ships
- Govt. ships: Marine Casualty excludes warships and Govt. non-commercial ships. Shipping Casualty has no such exclusion
- Consequence: Shipping Casualty → formal investigation → COC may be cancelled/suspended. Marine Casualty → pollution containment action, penalties
- One incident — both terms: A tanker grounding near coast causing oil spill is Shipping Casualty (S.358a) AND Marine Casualty (S.356A) simultaneously
Exam Type 2 — "Key Changes/Amendments in MS Act 2025"
Use this structure: brief intro → list changes → focus on casualty terms specifically → mention new bodies/procedures.
Opening Line to Use
Suggested Intro
"The Merchant Shipping Act 2025 (Act No. 24 of 2025) replaces the Merchant Shipping Act 1958, consolidating 67 years of amendments into a modern 15-Part structure aligned with international conventions including SOLAS, MARPOL, MLC 2006, and the Nairobi Wreck Convention 2007."
10 Key Changes to List
- "Shipping Casualty" abolished. Replaced by unified term "Marine Casualty" under S.231, Part XI. Definition expanded from 5 to 7 clauses
- Two new clauses added to Marine Casualty: (f) pollution/environmental damage in coastal waters, (g) fire or explosion on Indian vessel anywhere or any vessel near Indian coast
- New term "Marine Incident" (Part X, S.224) — broadest umbrella covering all events including marine casualty, disaster, storms, very serious marine casualty
- New term "Maritime Casualty" (Part XII, S.234) — used only in Wreck chapter for collision/stranding causing damage to ship/cargo
- 24-hour reporting rule introduced (S.231(2)). Old Act had no specific time limit
- Reporting duty expanded — Now includes ship owner, manager, operator, company (not just master/pilot in 1958 Act)
- Investigation changed — From Judicial Magistrate + Assessors to Central Govt. appointed Marine Safety Investigation body under Safety Convention
- Seafarers' Welfare Board established (S.5) — completely new body not in 1958 Act
- Part X: Marine Incident & Emergency Response — entirely new Part with Nodal Authority (S.225) and compulsory insurance (S.229)
- Language modernised — "Seaman" → "Seafarer" (MLC 2006), "Ship" → "Vessel" as primary term throughout
Quick-Fire Questions & Answers
Q. Is "Shipping Casualty" in the MS Act 2025?
No. The 2025 Act completely removes this term. It is replaced by "Marine Casualty" under Section 231, Part XI — with an expanded 7-clause definition.
Q. How many clauses define Marine Casualty in the 2025 Act?
Seven clauses (a) to (g). The old Shipping Casualty (1958 Act) had 5 clauses. The two new clauses added are: (f) pollution/environmental damage, and (g) fire or explosion.
Q. What is the time limit to report a Marine Casualty under the 2025 Act?
Within 24 hours of the occurrence — Section 231(2). The 1958 Act had no specific time limit, only requiring report "on arriving in India."
Q. Who investigates a Marine Casualty under the 2025 Act?
A body appointed by the Central Government under Section 231(5), aligned with the Safety Convention. This replaces the Judicial Magistrate + Assessors system of the 1958 Act.
Q. What is "Maritime Casualty" in the 2025 Act? Is it same as Marine Casualty?
No — they are different. Maritime Casualty (S.234) is defined only in the Wreck chapter (Part XII) and means collision, stranding or navigation incident causing material damage to a ship or cargo. Marine Casualty (S.231) is the main investigation term covering all 7 clauses.
Q. Name the three new casualty-related terms introduced in MS Act 2025.
1) Marine Incident (Part X, S.224) — broadest umbrella. 2) Marine Casualty (Part XI, S.231) — unified investigation term replacing Shipping Casualty. 3) Maritime Casualty (Part XII, S.234) — wreck chapter only.
Q. Under 1958 Act, can one incident be both a Shipping Casualty and a Marine Casualty?
Yes. Example: A tanker grounds near Mumbai and causes an oil spill. This is a Shipping Casualty (S.358a — stranded near Indian coast) AND a Marine Casualty (S.356A — oil threatening the coastline) simultaneously.
Q. Name any three new provisions in MS Act 2025 not in 1958 Act.
1) Seafarers' Welfare Board (S.5) · 2) Nodal Authority for Marine Incidents (S.225) · 3) 24-hour casualty reporting deadline (S.231(2)) · 4) Compulsory insurance for marine incident liability (S.229) · 5) Fire/explosion as Marine Casualty clause — S.231(g).
Final Memory Aid:
1958 Act: Two terms, two Parts → Shipping Casualty (Part XII) + Marine Casualty (Part XIA)
2025 Act: One unified term → Marine Casualty (Part XI) covers everything · Plus two new terms: Marine Incident (broader) + Maritime Casualty (wrecks only)
1958 Act: Two terms, two Parts → Shipping Casualty (Part XII) + Marine Casualty (Part XIA)
2025 Act: One unified term → Marine Casualty (Part XI) covers everything · Plus two new terms: Marine Incident (broader) + Maritime Casualty (wrecks only)
