The short version
- 33 CFR 151.67 prohibits discharging plastic or garbage mixed with plastic from any ship. No size limit, no distance limit.
- 33 CFR 151.05 already defines sharps as medical waste, so the classification argument is settled by regulation.
- Three duties, three different thresholds: placard at 26 feet, garbage management plan at 40 feet, record book at 400 gross tons or 15 persons international.
- Landing it engages 49 CFR 173.197: UN standard Packing Group II, puncture resistant to part 178 subpart M. A repurposed container is refusable.
- Controlled substances leave this stream entirely and go through 21 CFR part 1317.
Three federal titles, one bag of waste
A used sharps container from a ship’s medicine chest is regulated three times over, by three agencies, under three titles of the CFR. No page on the open web joins them, which is why this question is answered so badly.
| Stage | Rule | What it controls |
|---|---|---|
| Aboard | 33 CFR 151, Coast Guard[1] | Whether it may leave the vessel at sea, the management plan, the placard and the record book |
| Ashore, in transit | 49 CFR 173.197, PHMSA[2] | The packaging the waste must be in before a carrier will move it |
| Controlled fraction | 21 CFR part 1317, DEA[3] | Anything scheduled, which leaves the general waste stream entirely |
Miss the first and you have a discharge violation. Miss the second and the waste sits on the quay, because no licensed hauler will accept it. Miss the third and you have a DEA problem.
What the search results actually return
Ask the open web how a commercial vessel disposes of medical waste and the first page in August 2026 returns, in order: a United States Navy afloat medical waste management guide dated 1999, a WHO Guide to Ship Sanitation chapter, the definitions section of 33 CFR 151, a Massachusetts state public health code, a Coast Guard marine safety manual PDF, the DOT regulated medical waste section, and two land based medical waste vendors writing about clinics and dental practices.
Two are genuinely relevant and both are cited out of context. The rest answer a different reader: a Navy corpsman, a port health officer, a Massachusetts clinic manager, or a dentist. It is the same jurisdiction substitution we documented for flag state chest rules and for the EU category system .
The most useful fact, that a sharps container is plastic and may never go over the side, appears nowhere.
The federal definition already includes sharps
Operators sometimes argue whether a used needle is medical waste or general garbage. Federal law settled it. 33 CFR 151.05 defines medical waste as isolation wastes, infectious agents, human blood and blood products, pathological wastes, sharps, body parts, contaminated bedding, surgical wastes and potentially contaminated laboratory wastes, dialysis wastes, and such additional medical items as prescribed by the Administrator of the EPA by regulation.[4]
Sharps sits in that list unqualified. A lancet, a suture needle, a scalpel blade and a shattered ampoule are all inside the definition.
The one line that decides the whole question
33 CFR 151.67 states that no person on board any ship may discharge into the sea, or into the navigable waters of the United States, plastic or garbage mixed with plastic.[5] Sharps containers are rigid plastic. Red bags are plastic. So is most of what a medicine chest generates. The prohibition is absolute and it is not limited by vessel size or by distance from land.
The three documentary duties, and the size that triggers each
This is where most programmes fail an inspection. The three obligations carry three different thresholds and operators assume one number covers all of them.
| Duty | Section | Applies to |
|---|---|---|
| Placard | 33 CFR 151.59[6] | Manned US ships 26 feet or more in length; manned platforms in transit; manned foreign vessels 40 feet or more in US waters |
| Garbage management plan | 33 CFR 151.57[7] | Manned US documented or state numbered vessels 40 feet or more engaged in commerce or with a galley and berthing; manned platforms; manned foreign vessels of 100 gross tons or more in US waters |
| Record keeping | 33 CFR 151.55[8] | Manned oceangoing vessels of 400 gross tons or more; platforms; vessels certified to carry 15 or more persons on an international voyage |
Read the middle row carefully. A 44 foot manned workboat in commerce needs a written garbage management plan describing how garbage is collected, processed, stored and discharged, and naming the person in charge of it.[7] Medical waste from the chest is part of what it must account for.
Most small operators we assess have a placard and no plan, or a plan written for food waste that never mentions the chest. Sound programmes fail here for a mundane reason: the chest and the waste stream are managed by different people. That is the gap our maritime medical consulting engagement closes, and it is the same documentation failure described in what an inspector actually checks.
Landing it is a packaging problem, not a paperwork problem
Once it cannot go over the side, it has to travel. The moment it moves by public highway it is a hazardous materials shipment and 49 CFR 173.197 applies.[2]
The section is specific where the maritime rules are not. Packagings must be rigid containers meeting subpart B of part 173, and non-bulk containers must be UN standard packagings at the Packing Group II performance level. Sharps containers must be puncture resistant for sharps and sharps with residual fluid, demonstrated by the performance tests in 49 CFR part 178 subpart M, and closed securely to prevent leaks or punctures in conformance with the manufacturer’s instructions.[2]
Inner packaging limits follow: solid waste in plastic film bags up to 175 litres, liquid waste in rigid inner packagings up to 19 litres, and sharps in puncture resistant containers.[2]
The practical failure this creates
A vessel that has been collecting sharps in a repurposed container, however sturdy, does not hold a UN standard Packing Group II package. A licensed hauler will refuse it at the gangway, and the waste stays aboard while the vessel is on a schedule. Operators running long distances from definitive care feel this first, because they are also the ones carrying the fullest chest. Buy the compliant container before the voyage, not after.
Controlled substances leave this stream entirely
None of the above applies to a scheduled drug. Expired controlled substances from a ship’s medicine chest are governed by 21 CFR part 1317, and the four disposal routes in 1317.05(a) are the only lawful ones.[3]
Three of the four require a registered location ashore, which is the structural problem for a vessel at sea. The fourth is a request for assistance from the DEA Special Agent in Charge using DEA Form 41. The destruction standard at 21 CFR 1317.90 requires the substance to be rendered non-retrievable, and where substances are comingled the method must render all of them non-retrievable.[9]
The full walkthrough is in disposing of expired controlled substances from a ship’s medicine chest. The record trail that has to survive it is in recordkeeping aboard a vessel, and the annual accounting in the two annual reports.
Getting the split wrong runs both ways. Putting a controlled substance in the medical waste stream is a diversion risk a DEA inspection will find. Putting sharps into the DEA process wastes an agent’s time and yours. The clean separation starts at stocking, which is why how to stock a ship medicine chest treats the controlled fraction as its own line, and why the schedules article matters before anything is bought.
The same waste, four different vessel classes
The discharge rule is uniform. What changes by class is how much waste the chest generates and how long the vessel is away from a hauler, which decides storage.
| Class | Chest driver | Waste planning consequence |
|---|---|---|
| Commercial fishingsee the part 28 review | 46 CFR 28.210 chest, high trauma rate | Long Alaska trips with no port call. Storage, not frequency, is the binding constraint |
| Towing, Subchapter Msee the Subchapter M review | Small crew, frequent port calls | Landing is easy. The failure mode is a plan that never names medical waste |
| Offshore supplysee the Subchapter L review | Industrial complement, client medical standards | Volume is higher than the marine crew alone suggests. Size to the total on board |
| Small passengersee the Subchapter T review | Passenger first aid use, day operations | Often under 400 gross tons, so no record book, but the placard and plan still bite |
Facilities change the picture too. A vessel with a hospital space under 46 CFR 92.20-35 or 108.209 generates more than a locker does, and a mobile offshore drilling unit more again. The kit comparison by class sets out what each class is required to carry in the first place.
The crew exposure question nobody asks until it happens
A needlestick aboard is a medical event, an occupational exposure and a documentation event at once. Ashore it sits under the OSHA bloodborne pathogens standard at 29 CFR 1910.1030, which requires an exposure control plan, engineering controls including sharps containers, and post exposure evaluation and follow up.[10]
Whether it reaches a particular vessel turns on inspected status and on the Coast Guard’s own authority, and is genuinely contested. Build the controls regardless: the container that satisfies 49 CFR 173.197 is also the engineering control, and the exposure follow up is a physician arrangement you either have or you do not.
What follows an exposure is a reporting question. Whether it counts as treatment beyond first aid decides whether a marine casualty report is owed, and the crew medical records article covers who may see the file afterwards.
The exception, and why it is narrower than it looks
33 CFR 151.77 provides exceptions for emergencies and health risks.[11] Operators occasionally read that as a general safety valve for medical waste. It is not.
It is an emergency provision, keyed to securing the safety of the ship and those on board or saving life at sea. A full sharps container on a long voyage is a planning failure, and it will be assessed as one.
The answer to a capacity problem is storage and a landing plan, a matter for the garbage management plan under 151.57[7] and for shipboard control of garbage under 151.63.[12] Discharge outside special areas is governed by 151.69 and none of it reaches plastics.[13]
The seven line fix
- Confirm which of the three thresholds you cross. 26 feet for the placard, 40 feet for the plan, 400 gross tons or 15 persons international for the record book.[6][7][8]
- Name medical waste explicitly in the garbage management plan. A plan that only contemplates food and packaging does not cover the chest.
- Buy a UN standard Packing Group II sharps container tested to 49 CFR part 178 subpart M before you need one.[2]
- Size storage to the longest voyage, not the average one.
- Contract a licensed hauler at your regular ports and confirm in advance that they will accept a marine consignment.
- Separate the controlled substance fraction physically and route it through 21 CFR part 1317.[3]
- Write the needlestick procedure now, including who the crew reaches and how fast.
Everything above is chest management, not a separate discipline. It is part of the same programme covered in ship medical chest management and set up the way the six decisions describe. If the fleet changes flag, the discharge rules change with the flag while 49 CFR 173.197 does not.
Discovery Health MD is led by Ann Jarris MD, MBA, FACEP, a board certified emergency physician. Speak to the team about the chest, the waste stream and the physician arrangement behind both.
Common questions
Can a vessel discharge medical waste at sea?
Not if it contains plastic, which nearly all of it does. 33 CFR 151.67 states that no person on board any ship may discharge into the sea, or into the navigable waters of the United States, plastic or garbage mixed with plastic[5]. Sharps containers and red bags are plastic, so the prohibition is absolute and is not relaxed by vessel size or distance from land. 33 CFR 151.05 already defines sharps as medical waste[4]. The waste has to be stored and landed.
Is a used needle from the ship’s medicine chest legally medical waste?
Yes, and it is settled by definition rather than by judgement. 33 CFR 151.05 defines medical waste to include isolation wastes, infectious agents, human blood and blood products, pathological wastes, sharps, body parts, contaminated bedding, surgical wastes, potentially contaminated laboratory wastes and dialysis wastes[4]. Sharps appears unqualified in that list, so a lancet, a suture needle and a scalpel blade are all inside it. Our ship medical chest management service builds the handling around that.
Which vessels need a garbage management plan?
Under 33 CFR 151.57, manned United States documented or state numbered vessels of 40 feet or more engaged in commerce or with a galley and berthing, manned platforms, and manned foreign vessels of 100 gross tons or more in US waters[7]. The plan must describe collecting, processing, storing and discharging garbage and designate the person in charge of carrying it out[7]. The placard threshold is different at 26 feet under 151.59[6], and the record keeping threshold is different again at 400 gross tons under 151.55[8].
What container do sharps have to be in when landed ashore?
A UN standard packaging at the Packing Group II performance level. 49 CFR 173.197 requires rigid containers meeting subpart B of part 173, and requires sharps containers to be puncture resistant for sharps and sharps with residual fluid as demonstrated by the performance tests in 49 CFR part 178 subpart M, closed securely to prevent leaks or punctures per the manufacturer’s instructions[2]. A repurposed container, however sturdy, is not compliant and a licensed hauler can refuse it.
Do expired controlled substances go in the medical waste stream?
No. They leave it entirely and are governed by 21 CFR part 1317[3]. Section 1317.05(a) sets four disposal routes and three of them require a registered location ashore, which is the structural problem for a vessel[3]. The destruction standard at 21 CFR 1317.90 requires the substance to be rendered non-retrievable, and where substances are comingled the method must render all of them non-retrievable[9]. Read the vessel controlled substance disposal walkthrough.
Does OSHA’s bloodborne pathogens standard apply on a vessel?
It is genuinely contested, because jurisdiction turns on the vessel’s inspected status and on the Coast Guard’s own authority. 29 CFR 1910.1030 requires an exposure control plan, engineering controls including sharps containers, and post exposure evaluation and follow up[10]. The practical posture is to build the controls regardless: the container that satisfies 49 CFR 173.197 is also the engineering control[2], and the post exposure follow up is a physician arrangement. That is what our consulting line arranges.
Can we discharge medical waste under the emergency exception?
Almost never. 33 CFR 151.77 provides exceptions for emergencies and health risks, keyed to securing the safety of the ship and those on board or to saving life at sea[11]. A full sharps container on a long voyage is a planning failure, not an emergency, and it will be assessed that way. The correct answer is storage capacity and a landing plan under the garbage management plan at 151.57[7] and shipboard control of garbage at 151.63[12].
