SHORE BASED MAINTENANCE ISO

Distance traveled varied across day and night for cargo ships, tugs, and ferries while speed varied between day and night only for ferries. We found that distance traveled and speed varied by season for tugs, motorized recreational and sailing vessels. Large shipping vessels often traveled at speeds greater than 10 kn when transiting the study area, and ferries traveled at speeds greater than 30 kn. Ferries and other commercial vessels (e.g., cargo and tanker ships and tug boats) traveled consistently in distinct paths while recreational traffic (e.g., motorized recreational craft and sailing vessels) was more dispersed. We found that ferries traveled the greatest distance of any vessel type. In doing so, we provide data that can inform collision risk to cetaceans who show an increased presence in the Bay and evaluation of the value in incorporating data from multiple sources when observing vessel traffic. We analyzed vessel presence and speed across space and time using vessel data from the Marine Monitor, a vessel tracking system that integrates data from the Automatic Identification System and a marine-radar sensor linked to a high-definition camera. One such location is in San Francisco Bay where a variety of vessel types transit a highly developed urban estuary. Vessel traffic management systems can be employed for environmental management where vessel activity may be of concern.

4Department of Physics & Astronomy, San Francisco State University, San Francisco, CA, United States.

3Department of Geography & Environment, San Francisco State University, San Francisco, CA, United States.

2Estuary & Ocean Science Center, San Francisco State University, Tiburon, CA, United States.

1ProtectedSeas, Anthropocene Institute, Palo Alto, CA, United States.

Davis 3, Brendan Tougher 1 and Virgil Zetterlind 1 We work with a major supplier of such systems and aim to deploy such projects soon in two major ports in West Africa.Samantha Cope 1,2*, Ellen Hines 2,3*, Roger Bland 2,4, Jerry D. One central area of interest is VTSM systems for port authorities around Africa. To minimise costs for the shipowners and operators, we offer our customers Shore Based Maintenance (SMB) contracts and remote monitoring of equipment onboard. We have robust safety procedures whenever our staff attends onboard. Safety of life at sea is our primary focus, and we deliver this by utilising marine electronics solutions.

SHORE BASED MAINTENANCE ISO

We operate under ISO 9001, and our work is certified by major classification societies.

We undertake installation, inspections, repairs and maintenance for all types of marine navigation and communication systems, including Gyrocompases, Autopilots, Radars, Sonars and Echo Sounders, GMDSS, VHF, Inmarsat, Navtex, EPIRB, Iridium and others. Our team of qualified and experienced engineers and radio surveyors are available 24/7 and can attend a vessel in any African port at short notice.

We have started with our two service locations in the major ports of West Africa – Dakar, Senegal and Abidjan, Cote d'Ivoire, from which we service clients in all major ports of the Western Coast of Africa. Established in 2019, Africa Navtec aims to deliver marine radio survey and navigation services to shipowners and operators on and around the continent of Africa.

Shore based maintenance