Video

The difference between Gross Tonnage and Net Tonnage


published on 14 July 2020 988 -

Found on YouTube. Created by "Steering Mariners".
Using pictures and sketches, this video finally explains the difference between gross tonnage (GRT) and net tonnage (NRT); the ship spaces that are included/excluded in their calculation; and the importance of these terms to ship owners.

Contents of this video will benefit mariners preparing for exams (written and oral examinations).
What's your opinion on this?
Login or register to write comments and join the discussion!
Read more...

Video Yaw Stability of Ships - Basic Principles by Knud Benedict

published on 18 November 2021

Another very good explanatory video by Knud Benedict. Absolutely worth seeing.
Yaw Stability is an important element of Ships Manoeuvrability - both for course keeping and turning ability. This first video in a series explains the Basic Principles of stability in steady state equilibrium conditions and the forces / moments involved

1

Article New Study on GNSS Interference in the Baltic Sea

by GPSPATRON Sp. z o. o. - published on 12 March 2025

GNSS interference has become a growing challenge in the Baltic Sea, affecting maritime navigation, aviation, and critical infrastructure. While numerous datasets and services, such as gpsjam.org, spoofing.skai-data-services.com, and flightradar24, report high-altitude GNSS interference based on ADS-B data, there is a significant lack of studies focusing on ground-level interference.

3

Video Pivot Point Demo - HS Wismar

published on 10 July 2020

SAMMON Lecturing Video describing
"Pivot Point Demonstration"
-------------------------------------------------------------
SAMMON - the IDEAL tool to identify manoeuvring capabilities of a ship - SAMMON - learning the EFFECTIVE way

0

Article Navigation alternative in the event of GNSS failure due to jamming or spoofing

by TRENZ GmbH - published on 7 April 2025

What happens when GNSS fails? In maritime navigation, this isn’t a hypothetical scenario – it’s a growing risk. Spoofing, jamming, and GNSS outages are increasing, especially in the Baltic Sea region. A failure can cripple navigation systems – with potentially serious consequences.

1

Video OMC International - DUKC® Explained

published on 14 October 2019

A in-depth video explaining how DUKC® works.

0

Video Maersk Saigon 332.01 meter - tribute to PTP Marine Pilot

published on 27 January 2021

#marinepilot
#harbourpilot
#maritime
#portoftanjungpelepas

0

Video St Johns Bar Pilot Association

published on 17 January 2020

A collection of action from the St Johns Bar Pilot Association In the early 1800′s as the commercial ports along the St Johns River began to develop, a select group of brave and skilled seafarers would row to sea to meet arriving cargo sailing ships. These daring individuals would use their extensive local knowledge to safely guide the sailing ships across the treacherous sand bars that guarded the river entrance. This was the origin of the St. Johns Bar Pilots. Initially it was a bit of a...

0

Video Getting Off a Submarine

published on 27 November 2025

0

Video PTR Pilot ladder

published on 6 November 2020

0

Article Three Pilot Boats for Tanzania Ports Authority (TPA)

by Southern Engineering Co. Ltd (SECO) - published on 18 March 2020

Southern Engineering Co. Ltd (SECO) recently secured a contract from the Tanzania Ports Authority (TPA) to construct and deliver three pilot boats.

0