A verdict of misadventure was recorded by Dr Paul Knapman, the coroner at the inquest.
A pathologist, Dr Peter Wilkins, said ketamine was found in Mr Frisch's blood and liver.
Underwater archaeology is often complementary to archaeological research on terrestrial sites because the two are often linked by many and various elements including geographic, social, political, economic and other considerations.
As a result, a study of an archaeological landscape can involve a multidisciplinary approach requiring the inclusion of many specialists from a variety of disciplines including prehistory, historical archaeology, maritime archaeology, and anthropology. One is the wreck of the VOC ship Zuytdorp lost in 1711 on the coast of Western Australia, where there remains considerable speculation that some of the crew survived and, after establishing themselves on shore, intermixed with indigenous tribes from the area.
Also, because human societies have always made use of water, sometimes the remains of structures that these societies built underwater still exist (such as the foundations of crannogs, bridges and harbours) when traces on dry land have been lost.
As a result, underwater archaeological sites cover a vast range including: submerged indigenous sites and places where people once lived or visited that have been subsequently covered by water due to rising sea levels; wells, cenotes, wrecks (shipwrecks; aircraft); the remains of structures created in water (such as crannogs, bridges or harbours); other port-related structures; refuse or debris sites where people disposed of their waste, garbage and other items, such as ships, aircraft, munitions and machinery, by dumping into the water.
In 2009, Gaydar expanded into the app market, releasing its i OS and Android app available to download from the Apple App Store and Google Play.
In the shipwreck field alone, individual shipwrecks can be of significant historical importance either because of the magnitude of loss of life (such as the Titanic) or circumstances of loss (Housatonic was the first vessel in history sunk by an enemy submarine).It helps states parties to protect their underwater cultural heritage with an international legal framework.Underwater sites are inevitably difficult to access, and more hazardous, compared with working on dry land.In 2017, Gaydar relaunched its site, app and brand.Registered users are able to browse through online lists of users who are logged into the site at that time, or through lists of all active profiles.Members may add more photos into an 'album' attached to their profile that are viewable by other members.Guests face other site restrictions, such as a daily limit of 8 messages that they can send and 25 profiles that they can view, and a limit on number of chat rooms accessible at the same time.The development of submarines, for example, can be traced via underwater archaeological research, via the Hunley, which was the first submarine to sink an enemy ship (Hunley also had unique construction details not found in previous vessels and was one of the few historic warships ever raised intact); All traces of human existence underwater which are one hundred years old or more are protected by the UNESCO Convention on the Protection of the Underwater Cultural Heritage.This convention aims at preventing the destruction or loss of historic and cultural information and looting.Guests cannot view archives of sent messages, and cannot use the friends list and do not have access to all search options. The site has more recently Profiles typically include standard information on age, location, physical features, sexual predilections, hobbies, and pastimes.Profiles usually include a free format description about their owner and what they seek in a partner.