ronments. The new agreement will address speci? c techni- cal gaps in the UUV defense and offshore energy markets especially for long duration, multi-payload mission opera- tions where communications are often denied or restricted. As part of the new alliance, Metron’s Resilient Mission Autonomy portfolio
Photo courtesy Global Ocean Design Figure 7 A 35Ah AGM lead-acid battery is tested using the West Mountain Radio CBA to show the effect of simply ? lling the battery voids with mineral oil as a compensating ? uid. The CBA is programmed to cut-off at a voltage of 10.50v. The top line (red) shows the
Figure 1 A self-righting vehicle design with buoyancy high and weight low, WHOI’s SeaBED AUV captures the attention of a pair of curious Antarctic penguins as it is deployed from the British research vessel James Clark Ross. Vehicle designers allowed for temperature reduction of battery capacity. Recharge
surface in each discharge-recharge cycle. This limits the number of recovery beacons. times the battery may be recharged, known as cycle life. BATTERY BASICS FACTORS EFFECTING CAPACITY A cell generates electrical power through two galvanically Batteries work on chemical reactions. The chemical reaction active
regulated industry in the world.” How- ever, commercial success depends on many factors, not least a predictable OPEX. Over the past four years, SMD has worked with Oil States Industries to calculate cost per tonne ? gures for prospective customers. Patania II uses jet water pumps to Oil States’
CRANES & OFFSHORE WIND Cadeler’s new NG-20000X class vessels will have 2,600t cranes, and its new NG-20000F class vessel will have a 3,200t crane. Similar new vessels for Havfram will have a crane of approximately 3,200t, as will Van Oord’s KNUD E. HAN- SEN-designed newbuilding currently being built in
from gasoline to methanol, but compared to just buying an EV After some pondering, I think I can reduce it to this logi- today that is a pointless exercise. It would actually make more cal sequence: sense to buy a plug-in hybrid that is con? gured for methanol It is the carbon. We want zero carbon as
Back to the Drawing Board When Efficiency Does Not Help Sustainability By Rik van Hemmen y brother and I had a discussion about methanol This study concluded that the Toyota Prius Prime is the green- where we concluded that methanol is a prom- est car you can buy in the United States. ising sustainable
with es- inspection framework. tablished inspection practices to elevate maritime safety and SIRE 2.0 brings digital reporting and real-time analytics, to environmental responsibility to unprecedented levels. the fore, marking a signi? cant technological stride. These in- SIRE 2.0 represents an
TECH FEATURE Ammonia and the 15,00 A project initiated by Seaspan Corporation and the Mærsk Mc-Kinney Møller Center for Zero Carbon Shipping (MMMCZCS) has set out to develop a design for a large 15,000-TEU ammonia-fueled container vessel. Image Seaspan Corporation/Foreship By Greg Trauthwein orking with
EAL AND STERN TUBE DAMAGES “Our recommendations “A good bearing are simple. Please design is have good control over important.” your oil quality in the primary barrier, the aft – Øystein Åsheim Alnes sealing system,” Head of section for Propulsion and Steering, – Arun Sethumadhavan DNV
The Path to Zero – Sponsored EverClean The always clean performance solution • • • • Save fuel Reduce carbon Minimize downtime Maintain biosecurity Improve performance T e Four E’s of Marine Sustainability: EverClean’s Solution to Biofouling t is a new year, but the age-old problem of biofouling per-
Feature Marine Simulation Pioneering regulatory change Without simulation, opportunities to train on marine evacuation systems are few and far between, basically only Virtual Marine’s impact extends beyond technology de- coming along when the system becomes outdated and velopment. The company has played
who has lost their life on our nation’s waterways, I strongly encourage you to issue SMS regula- safety can sometimes appear as a set of niche top- B ics, each one just distantly connected to another. tions within the next 30 days.” A copy of the letter was After all, passengers aboard a cruise ship
SHOW PREVIEW OCEANOLOGY INTERNATIONAL 2024 All images courtesy Oceanology International Oi 2024 ceanology International 2024 (Oi24), arguably content across ? ve different conference locations. World-class the world’s biggest and best marine science, scientists, thought leaders and innovators in the
punctured cell failed. Elimination of fans. The fans that are used to force air This experiment has since been replicated with other bat- through electronics chassis are a major source of failure in teries and cell con? gurations, and demonstrates the inherent themselves, they also impart additional high-frequen
electronic and electrical applica- power sources, designing high power propulsion and electron- tions. Immersion cooling is embedded into electric automo- ics systems into the latest generation of their equipment. With biles and heavy vehicles, electric personal watercraft, station- higher voltage systems
environments. enabling longer missions at greater depths. They are larger, more robust, and capable of performing com- • Arti? cial Intelligence and Analytics: AI-driven analyt- plex operations at signi? cant depths, making them essential ics will become more sophisticated, allowing ROVs to pro- tools in
the Aurora Botnia’s methane emissions by 10%. to increased use of LNG. And the company hopes to contin- In addition, Wärtsilä’s data monitoring and analytics capa- ue these reductions through further actions; Ståhlberg hopes bilities give insights into the vessel’s performance, unlocking Wasaline can be
establishes a aquatic environments. manufacturing center for the pro- This demonstration duction of several navigation and event was more than robotics systems including the Bayonet line of surf zone crawl- just a showcase of technology; it was a crucial part of the Blue ers, EverClean hull cleaning
around the Por- observations, analysis, and lessons learned that can feed the tuguese Navy’s base on the Troia Peninsula. development of the Alliance’s tactics, techniques, and proce- Fifteen NATO nations participated in this year’s exercise, dures in the use of maritime unmanned systems,” according to which
UNDERWATER NOISE ICS ICS NCE IWSA Chris Dr. Jesse Gavin Waddington: Seyedvahid Spence: Allwright: If considered at Having wind Vakili It’s not just an early stage, onboard also estimates that a and by careful a case of enables range 10% reduction in consideration to be extended speed
include lists of suitable techniques for measurement of URN, explains Chris Waddington, Technical Director at the In- ternational Chamber of Shipping (ICS). Shipowners can de? ne their own targets or adopt the goals of quiet ship notations offered by class. “Many of the fuel ef- ? ciency measures adopted
equally unenlightening. that the level of PFOS is at or below 1 ppm. Ragnar Kreft- Another point to consider is that manufacturers are already ing, Founder, Lifeclean explains that the process is perfectly switching to alternative products and there is always a pos- safe and produces less wastewater than