A Gulf in Lockdown: how an enforced ban on recreational vessels increased dolphin and fish communication ranges

2021 ◽  
Author(s):  
Matthew K. Pine ◽  
Louise Wilson ◽  
Andrew G. Jeffs ◽  
Lauren McWhinnie ◽  
Francis Juanes ◽  
...  
Keyword(s):  
Recreational Vessels

Adequate Strength for Small High-Speed Vessels

1968 ◽  
Vol 5 (01) ◽  
pp. 63-71
Author(s):  
Philip J. Danahy
Keyword(s):  
Stress Analysis ◽  
High Speed ◽  
Structural Strength ◽  
Integrated Approach ◽  
Suggested Method ◽  
Impact Loads ◽  
Analysis Method ◽  
Safety Factors ◽  
Recreational Vessels

The paper presents a method for the determination of the critical minimum scantlings for small high-speed vessels. Particular attention is given to the shell plating strength for hydrodynamic impact loads. The suggested method uses an integrated approach involving assumed loads, suggested safety factors, and preferred stress-analysis method. The stress analysis uses plastic theory based partly on the works of J. Clarkson and Thein Wah. Included in the paper is a comparison of the relative structural strength of several commercial, military, and experimental hydrofoil vessels along with a few planing boats and a seaplane hull. This shows the variation of existing vessel structures and compares them to the results obtained by the suggested method. Most commercial, military, and recreational vessels exceed the minimum scantlings of the suggested method. The most significant deviation is the hull of the seaplane:

scholarly journals Modeling the spatial and seasonal distribution of offshore recreational vessels in the southeast United States

PLoS ONE ◽  
2018 ◽  
Vol 13 (11) ◽  
pp. e0208126 ◽  
Author(s):  
Nancy Montes ◽  
Robert Swett ◽  
Robert Ahrens
Keyword(s):  
United States ◽  
Seasonal Distribution ◽  
Southeast United States ◽  
Recreational Vessels

Identification of commercial and recreational vessels coated with banned organotin paint through screening of tin by portable XRF

2019 ◽  
Vol 362 ◽  
pp. 107-114 ◽  
Author(s):  
Maria Lagerström ◽  
Daniel Yngsell ◽  
Britta Eklund ◽  
Erik Ytreberg
Keyword(s):  
Portable Xrf ◽  
Recreational Vessels

scholarly journals COASTAL MAPPING AND KITESURFING

2018 ◽  
Vol XLII-4/W8 ◽  
pp. 3-10
Author(s):  
J. Barde ◽  
S. Bonhommeau ◽  
E. Chassot ◽  
B. Motah
Keyword(s):  
Data Collection ◽  
Data Storage ◽  
Low Cost ◽  
Environmental Parameters ◽  
Ocean Dynamics ◽  
Human Beings ◽  
Marine Animals ◽  
Coastal Mapping ◽  
Archival Tags ◽  
Recreational Vessels

<p><strong>Abstract.</strong> Collecting data on aquatic biodiversity is very challenging because of the difficulty to access underwater ecosystems. Over the years, field surveys have become easier and cheaper with the development of low cost electronics. Commercial and recreational vessels, including sailboats, can now substantially complement expensive scientific surveys and arrays of observation buoys deployed across the world oceans (Pesant et al., 2015, Karsenti et al., 2011). Meanwhile, a large variety of marine animals such as birds, mammals, and fish have become data collection platforms for both biological and environmental parameters through the advent of archival tags. It becomes obvious that data collection in coastal and high seas will become more popular and that citizen will play a growing role in acquiring information on ocean dynamics (physical, chemical and biological parameters). However, currently, very few attempts have been made to use Human beings as observation platforms. In this paper we describe large datasets (more than 200,000 pictures) that have been recently collected along the coast of Mauritius by using popular and cheap platforms such as kite surf and Stand Up Paddle. We describe the characteristics of the data collected and showcase how they can be geolocated and used to complement remote sensing and mapping in order to drastically extend the current scope of “old school” fieldwork. We point out some of the main limitations encountered which need to be addressed to foster this citizen science approach such as data storage and transmission, deep learning to automate image recognition. The methods are all based on open source softwares.</p>

scholarly journals Navigational, Historical and Environmental Perspective of St. Augustine Waterways

EDIS ◽  
2019 ◽  
Vol 2005 (13) ◽  
Author(s):  
St. Augustine Port, Waterway, and Beach District ◽  
Florida Sea Grant
Keyword(s):  
North America ◽  
Natural Resources ◽  
Salt Marshes ◽  
Maritime History ◽  
Cultural Resources ◽  
Sources Of Information ◽  
Safe Navigation ◽  
Text Display ◽  
History Of ◽  
Recreational Vessels

St. Augustine, the oldest city in North America, lies at Mile 778 of the Atlantic Intracoastal Waterway, which runs 1095 miles from Norfolk, Virginia, to Miami, Florida. This guide is designed to help boaters enjoy and appreciate the natural and cultural resources accessible from recreational vessels in the St. Augustine area. The maps and text display and describe features from the maritime history of St. Augustine; resources important to boaters and anglers, including marinas, waterfront restaurants, and boat ramps; representative fish and wildlife; the distribution of natural resources, such as salt marshes, estuaries, and beaches; and sources of information and assistance. In addition, the guide offers suggestions for safe navigation and anchoring in area waters, which are subject to tidal currents due to the proximity of St. Augustine Inlet. Do not rely on this guide for navigational purposes. Instead, use the latest nautical charts. The St. Augustine Port, Waterway, and Beach District Commission provided funding for this guide, which was prepared in collaboration with the Florida Sea Grant College Program. Published April 2005.

Recreational vessels as a vector for marine non-natives: developing biosecurity measures and managing risk through an in-water encapsulation system

Hydrobiologia ◽  
2014 ◽  
Vol 750 (1) ◽  
pp. 187-199 ◽  
Author(s):  
R. C. Roche ◽  
J. M. Monnington ◽  
R. G. Newstead ◽  
K. Sambrook ◽  
K. Griffith ◽  
...  
Keyword(s):  
Managing Risk ◽  
Recreational Vessels

Wave Wake: Focus on Vessel Operations within Sheltered Waterways

2014 ◽  
Vol 30 (03) ◽  
pp. 109-125
Author(s):  
Gregory J. Macfarlane ◽  
Neil Bose ◽  
Jonathan T. Duffy
Keyword(s):  
Prediction Tool ◽  
Recreational Vessels ◽  
Regulatory Criterion

This article describes the development of an empirical tool that can rapidly and accurately predict the characteristics of the wave wake generated by vessels that typically operate within sheltered waterways, including small commercial craft and recreational vessels. A wave wake regulatory criterion is also proposed and incorporated within the prediction tool.

Copper emissions from antifouling paint on recreational vessels

2004 ◽  
Vol 48 (3-4) ◽  
pp. 371-377 ◽  
Author(s):  
Kenneth Schiff ◽  
Dario Diehl ◽  
Aldis Valkirs
Keyword(s):  
Antifouling Paint ◽  
Recreational Vessels

Fuzzy experts on recreational vessels, a risk modelling approach for marine invasions

2010 ◽  
Vol 221 (5) ◽  
pp. 850-863 ◽  
Author(s):  
Hernando Acosta ◽  
Dongrui Wu ◽  
Barrie M. Forrest
Keyword(s):  
Risk Modelling ◽  
Marine Invasions ◽  
Recreational Vessels ◽  
Modelling Approach
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