miscible barrier ? uid heavier than seawater (sg=1.026) and lighter than the battery electrolyte (sg=1.265). The original cell vent cap was screwed into the top of the riser pipe to vent the gases associated with charging. Wires were soldered to the lead (Pb) posts. The lead-acid battery was additionall
LANDER LAB #10 Of special interest for marine applications, LiPo batteries are Shipping any kind of lithium battery can be a challenge, and offered in a “pouch” design, with a soft, ? at body. The pouch IATA regs vary with the batteries inside or outside an instru- is vacuum-sealed, with all voids ?
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
LANDER LAB #10 BATTERY PACKS, CHARGING, AND CAPACITY TESTING Photo Credit: Hanumant Singh / Woods Hole Oceanographic Institution. By Kevin Hardy, Global Ocean Design LLC n ocean lander has many strengths including that produces the current is irreversible. Examples include ? exibility of deployment
elatively inactive since 2014, the Hunga Tonga–Hunga Ha‘apai (HT-HH) submarine volcano began erupting on December 20, 2021, reaching peak intensity on January 15, 2022. This triggered tsunamis throughout the Pa- R ci? c, destroyed lives and infrastructure, and generated the largest explosion recorded
TECH FEATURE IMR Image courtesy FORCE Technology OPTIMIZING CATHODIC PROTECTION SURVEY USING NON-CONTACT SENSORS By Svenn Magen Wigen, FORCE Technology he principle behind sacri? cial anodes, which are water structures, reducing the need for frequent repairs and used to safeguard underwater pipelines
sensor options for longer mission periods. About the Author For glider users working in ? sheries and conservation, Shea Quinn is the Product Line Manager the Sentinel can run several high-energy passive and active of the Slocum Glider at Teledyne Webb acoustic sensors, on-board processing, and imaging
architecture of the Slocum high-energy sensors like active or passive acoustics, sensors Glider, and allows for the same sensor and hardware options with on-board processing, and imaging, without seeing a sig- as the standard-sized vehicle. ni? cant decrease in their overall mission length,”
nyone familiar with glider hardware options integrated for a broad Glider answers that need,” said Shea autonomous underwater ve- range of missions. Quinn, Slocum Glider Product Line hicles (AUVs) is certainly “As the use of Slocum Gliders grew, Manager at TWR. A familiar with the popular- so did
feedback • Modular self-contained joints • Wrist camera option • Diagnostic power and status LEDs • Interchangeable parallel and intermeshing jaw options • On-board processing for advanced kinematics saabseaeye.com MTR #1 (1-17).indd 5 1/18/2024 9:04:54 A
also joined us. ? eet. We see demand continuing to grow into the system so watchkeepers can from both domestic and international more easily assess the options they have Machine Vision shipowners, and we are also seeing in- for responding to challenging situations. Groke Pro is the ? rst machine vision
Tech Files Latest Products, Systems and Ship Designs “Wall Climbing Robot” Danish Pilot calls gets ClassNK Nod LEGO Model "A tribute build to a work life at sea" Image courtesy MOL, Sumitomo Heavy Industries lassNK granted its Innovation Endorse- Image courtesy Espen Andersen/DanPilot ment for
201) for a tour of the ship at Naval Station Norfolk, Va., November 20, 2023. ENDLESS SUPPLY OF MARINE HARDWARE ! &"$)$?""?!!&"$l • New, Used and Rental Options Available AUTHORIZED YOKOHAMA • New Harness Installation 0r Harness Repair with Quick Turnaround FENDER DISTRIBUTOR • Foam and Pneumatic Fenders
SOVs Source: Intelatus Global Partners built vessel fell from ~25% in early 2021 to ~12% today. Visit Us The biggest new building premium is found in the USA, for at OTC Houston, TX a variety of reasons, where the three tier one SOVs are being Booth 2121 built for ~€87-168 million. VARD is a leader in
MARKETS & gas activity returns, we anticipate that supply of the vessels The Question of Emissions to offshore wind projects will reduce, driving demand for ad- Given that SOVs and CSOVs operate in a segment target- ditional CSOVs. ing reduced emissions, and many operate in the North Eu- Outside of China
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Vessels Gripper ing European CTV operator Northern Offshore Services (N-O-S) and U.S.-based investment ? rm OIC. The vessel, based on N-O-S’ 30-meter G-class design, fea- tures Volvo Penta’s IPS propulsion system and is said to be “hybrid-ready”, meaning it was built with space reserved for all the
There are ? ve major paint catego- lenges in shipyards is managing small building is a multifaceted endeavor ries in new construction shipbuilding: parts, which are prone to surface rust that demands integrative systems before installation. Optimizing the planning, as well as adoption of new 1.
Feature Electric Tugs ing tug design. ABB was brought on as systems integrator, and Coden, Ala. shipbuilder Master Boat Builders began building the vessel later that year. The result of these efforts is the 82-foot-long tug eWolf, built to ABS class and is compliant with U.S. Coast Guard Subchapter M
Board the eWolf: F - V B ULL ELECTRIC ESSEL RINGS EW ECHNOLOGY TO THE N T U.S. By Eric Haun rowley Maritime Corporation has owned and ing options to reduce their emissions. A growing num- operated a lot of vessels since its founding in ber of hybrid- and full-electric ferries and tugs have
Q&A We’ve still got some work to do. Despite the new guid- Looking across the industry, what are some ance, we are seeing differences in the way that the Coast other important regulatory issues that AWO is Guard is applying crewing and life-saving requirements to currently paying attention to? ATBs from
and great bene? ts. legalization in a number of states and localities is drug test- It’s hard work. You’re deployed. You’re on the water. You’re ing options which are better gauges of impairment than the away from home. It’s 24/7. We want to be realistic about current testing modalities that have been
Tech Files Latest Products & Technologies MarineShaft Yanmar Hydrogen MarineShaft specializes in urgent re- Fuel Cell AIP pair/replacement of damaged rudder and Yanmar Power Technology Co., Ltd. propeller equipment along with many (Yanmar PT), a subsidiary of Yanmar on-site repair services. MarineShaft
an Approval in Principle (AiP) of the 15,000 TEU ammonia fueled containership, the com- from ABS last summer. pany is fuel agnostic, exploring many options, and is in fact It is universally agreed that there are no 'silver bullet solu- in the midst of receiving a new series of 25 LNG dual-fueled tions'