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Seminar: Pacific Shipyards International, Project Management in Ship Repair

Troy Keipper, PE Programs Vice President Pacific Shipyards International (PSI) Pacific Shipyards International is a locally owned and operated full-service shipyard in Hawaii, with long-standing roots to the region dating back to 1944. PSI is a substantial and integral part of the Navy’s efforts to maintain the active surface ships and submarines which are home ported in Pearl Harbor. Our customers include the U.S. Navy, U.S. Army, Coast Guard, Military Sealift Command National Oceanic & Atmospheric Association, University of Hawaii, and many commercial marine operators and contractors. PSI’s new shipyard facility, located within 5.3 miles of Pearl Harbor Naval Shipyard

Seminar: Understanding the Fundamentals of Vortex-induced Vibrations: Research Past, Present and Future

Deniz Gedikli, PhD Assistant Professor Ocean and Resources Engineering Department, University of Hawaii at Manoa Figure 1: Example offshore platforms that undergo VIV The canonical problem of fluid flow across an elastically mounted circular cylinder has been a widely studied problem in fluid mechanics due to the ubiquitous nature of the simple geometry in engineering applications and the resulting complexity of the fluid-structure interaction. In many engineering design and operation applications, it is advantageous to be able to predict fluid-structure interactions such as self-limiting vortex-induced vibrations, since these vibrations can strongly affect fatigue life or operational downtime in a variety

Seminar: The Global Ocean Biogeochemistry Array (GO-BGC), a sensor and platform network for the global ocean

Ken Johnson, Ph.D. Senior Scientist Monterey Bay Aquarium Research Institute The ocean is under threat from a variety of processes driven by increasing atmospheric carbon dioxide such as ocean warming, changing winds and currents, decreasing pH and oxygen, and less ice cover at high latitudes.  However, vast areas of the open ocean are sampled from research ships for chemical and biological properties only once per decade or less, with sampling occurring mainly in summer.  Our ability to detect changes in ocean chemical and biological processes that may be occurring are greatly hindered by this undersampling.  Robotic platforms carrying chemical and

Seminar: Automating and IoTing coastal water quality sensors

Zoom Meeting ID______ 972 7385 3401 Passcode: ore792

Phil Bresnahan, Ph.D. Assistant Professor Department of Earth and Ocean Sciences University of North Carolina Wilmington In this talk, I will discuss developments of chemical and physical sensors, ranging from very inexpensive and simple to much more expensive and complicated. Specifically, I will describe recent projects geared toward improving the accuracy of autonomous pH sensors, developing and distributing low-cost coastal temperature and wave motion sensors, and adding simple Internet of Things modems and data management systems to both. I strive to collaborate with local stakeholders, especially watersports enthusiasts (surfers, paddleboarders, sailors) and (shell)fisheries, in order to help protect coastal environments by improving access

Seminar: Bioinspired Propulsion and Sensing Systems Enabling Next Generation Underwater Vehicles

Zoom Meeting ID______ 944 3679 2959 Passcode: ore792

Michael Krieg, PhD Assistant Professor Department of Ocean & Resources Engineering University of Hawai'i at Mānoa Even the most robust and sophisticated underwater robots pale in comparison to the performance of the ocean’s natural inhabitants, as many of which seem to traverse turbulent environments with ease and also demonstrate effective long range migration patterns. This talk analyzes a novel propulsion mechanism inspired by the locomotion of squid and jellyfish; whereby, finite fluid jets are ejected from a flexible internal cavity in a periodic fashion. Vortex ring formation, which is associated with expelled jets starting from rest, causes the thrust associated with this

MS Plan B Defense: Extreme wave height estimation from a global wave hindcast ensemble

Zoom Meeting ID______ 947 5656 0724 Passcode: ORE

Andi Erickson Graduate Student Department of Ocean and Resources Engineering University of Hawai’i at Mānoa Across the oceans, strong storms generate powerful waves that impact human activities such as commerce and design of coastal and offshore structures. To mitigate damages to these activities and to properly design infrastructures, it is imperative to understand the extreme wave climate. Previous works typically use a single dataset to describe the extreme wave climate. Here we analyze a comprehensive ensemble of 11 wave hindcasts most covering 30 years (1979-2016) to estimate extreme wave conditions at a commonly used return period of 100 years. To

Seminar: Recent, current, and near future underwater construction projects undertaken by the Fleet Naval Construction Force in the Pacific Ocean area

Watanabe 112 2505 Correa Rd, Honolulu, HI, United States

Zach Niezgodski, PE Lieutenant, US Navy & member of the Navy’s Civil Engineer Corps (Seabees) MS Student, Department of Ocean & Resources Engineering University of Hawai‘i at Mānoa Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366   The Fleet Naval Construction Force is an essential enabler of Fleet maneuver, sea control, and sea denial from the littorals. The mission of the Fleet Naval Construction Force is to translate Fleet Commander’s requirements into engineering tasks and to execute them successfully. This presentation will focus on

Seminar: Development of a Fiber Optic Mooring and Marine Pipeline Installation Engineering

Watanabe 112 2505 Correa Rd, Honolulu, HI, United States

John Yeh Ocean Engineer Makai Ocean Engineering Inc Alexander Le Bon Senior Mechanical Engineer Makai Ocean Engineering Inc   Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366   Makai Ocean Engineering will present several recent projects including the development of a Fiber Optic Mooring system, and the installation engineering of several marine pipelines. The Fiber Optic Mooring project is aimed at developing a compliant cable section that enables fiber optic communications between the ocean surface to the seafloor, while also serving as the mooring

The Pacific Island Ocean Observing System (PacIOOS) wave-measuring buoy

Watanabe 112 2505 Correa Rd, Honolulu, HI, United States

Kimball Millikan, Marine Research Engineer Pacific Islands Ocean Observing System (PacIOOS) University of Hawaiʻi at Mānoa Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 The PacIOOS wave buoy program maintains an array of 16 real-time wave-measuring buoys throughout the Pacific Islands. I will discuss the operation of the program, mooring design, fabrication, the components, including a brief history of Datwell and the design challenges of the Datawell Wave Rider stabilized platform to measure heave and direction, deployment and recovery techniques of the mooring system,

Integrated modeling to support marine energy resource characterization and coastal resilience

Watanabe 112 2505 Correa Rd, Honolulu, HI, United States

Dr. Zhaoqing Yang Chief Scientist Coastal Sciences Division Northwest National Laboratory     Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366   This seminar will cover two major research areas carrying out in the Ocean Dynamics Modeling Group in PNNL 1) Marine energy resource characterization and 2) Coastal storm surge and resilience. Marine renewable energy can play an important role in mitigating climate change and enhancing national energy security. PNNL is leading the modeling effort in marine energy resource characterization including wave, tidal stream,

Experimental and numerical investigation on the runup of leading-depression N-waves

Zoom Meeting ID: 961 6222 2366 Passcode: OREseminar

Dr. Peter Lo, Assistant Professor Department of Engineering Science and Ocean Engineering National Taiwan University Location Information **This seminar will be held over Zoom only** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 Solitary waves, widely used benchmark waves in hydrodynamic studies, had historically been implied as a suitable wave form for tsunamis. However, modern tsunami records reveal solitary waves to be an inaccurate model for real tsunamis. For example, before the arrival of a tsunami at shore, a significant recession of water is often observed. Solitary waves are incapable of capturing this drawdown phenomenon, and the leading-depression N-waves (LDNs)

The effect of water wave conditions and geometrical parameters of a fixed Oscillating Water Column Wave Energy Converter on its hydrodynamic performance

Watanabe 112 2505 Correa Rd, Honolulu, HI, United States

Dr. Ayrton Alfonso Medina Rodriguez Postdoctoral Researcher Applied Research Laboratory and Department of Ocean and Resources Engineering University of Hawaiʻi at Mānoa Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 In order to achieve maximum pneumatic power in an Oscillating Water Column (OWC) device, it is crucial for the chamber to operate as close to the resonance condition as possible. This means that the frequency of the incident wave must match the resonant frequency of the converter. This resonant frequency is influenced not only