We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is a Marine Sanitation Device?

Malcolm Tatum
By
Updated May 23, 2024
Our promise to you
WikiMotors is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WikiMotors, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

A Marine Sanitation Devices, or MSD, is a piece of equipment that is used to prevent the discharge of untreated sewage into open water. In many cases, the Marine Sanitation Device is part of the personal sanitary equipment that is found on any type of marine vessel. Yachts, sailboats, submarines, pleasure ships, and military seagoing vessels will all carry some type of MSD.

There are varying degrees of devices that are utilized by different crafts. The most basic is known as a Type I Marine Sanitation Device. Essentially, the system uses chemicals to break down the sewage and reduce the bacterial count to a point below 1,000 per 100 milliliters. This means there will be no solid waste discharged from the vessel in question.

A Type II Marine Sanitation Device provides all the benefit of a Type I model, but will break down the raw sewage to a greater degree. This means that the bacteria count is much lower with a Type II device. Vessel discharges that result from the use of a Type II MSD usually have a bacteria count that is under 200 per 100 milliliters.

A Type III Marine Sanitation Device does not involve a vessel discharge while in open water. Instead, this solution involves a holding tank where raw vessel sewage is treated and retained until the waste can be pumped out of the holding tank and directly into a sewage system operated on land.

The chemical toilets found on many yachts are a prime example of a working Marine Sanitation Device. This simple marine sanitary device makes it possible to use a minimum amount of chemicals that help to begin breaking down the waste product while still storing it for discharge once the vessel returns to the docks. Many marinas provide specific locations where a yacht or other vessel can connect with a sewage system and discharge the treated sewage quickly and efficiently.

Persons making use of any type of MSD would do well to learn any applicable local laws regarding the discharge of treated and untreated waste into open water. Many localities have specific locations that are defined as “no discharge areas”, where the release of treated and untreated waste is not allowed. Depending on local laws, persons violating these laws may be subject to heavy fines or even time spent in the local jail.

WikiMotors is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Malcolm Tatum
By Malcolm Tatum
Malcolm Tatum, a former teleconferencing industry professional, followed his passion for trivia, research, and writing to become a full-time freelance writer. He has contributed articles to a variety of print and online publications, including WikiMotors, and his work has also been featured in poetry collections, devotional anthologies, and newspapers. When not writing, Malcolm enjoys collecting vinyl records, following minor league baseball, and cycling.
Discussion Comments
Malcolm Tatum
Malcolm Tatum
Malcolm Tatum, a former teleconferencing industry professional, followed his passion for trivia, research, and writing...
Learn more
WikiMotors, in your inbox

Our latest articles, guides, and more, delivered daily.

WikiMotors, in your inbox

Our latest articles, guides, and more, delivered daily.