Mundo. Mapas índice. 1926. 1:65000000

Escala aproximada hallada a partir de la medición de un arco de meridiano terrestre de un gradoIncluye índice numérico de las diversas zonas marítimas en que aparece distribuido el mapamundiNota explicativa sobre las características y extensión de algunos volúmenesDivisión posterior en áreas geográficas diferentes con numeración propia, realizada a manoRepresenta escudo de la "Oficina hidrográfica", con la leyenda : "precio un chelin

Caribe (Mar). Cartas náuticas (1807-1816)

Comprende fundamentalmente cartas náuticas de las islas del mar Caribe dedicando especial atención a Jamaica. Algunas zonas de la costa de Africa están también ampliamente representadasTitulo tomado del lomo de la encuadernaciónTiene un hoja de índice manuscrita con una nota : "Régalado a ésta Direccón Hidrográfica por el Admirantazgo de Londres y recibido en 19 de octubre de 1817"Copia digital. Madrid : Ministerio de Cultura. Dirección General del Libro, Archivos y Bibliotecas, 201

A Portuguese East Indiaman from the 1502-1503 Fleet of Vasco da Gama off Al Hallaniyah Island, Oman: An interim report

Two Portuguese naus from Vasco da Gama's second voyage to India, left behind to disrupt maritime trade between India and the Red Sea, were wrecked in May 1503 off the north-eastern coast of Al Hallaniyah Island, Oman. The ships, Esmeralda and São Pedro, had been commanded by da Gama's maternal uncles, Vicente and Brás Sodré, respectively. A detailed study and scientific analysis of an artefact assemblage recovered during archaeological excavations conducted in Al Hallaniyah in 2013 and 2014 confirms the location of an early 16th-century Portuguese wreck-site, initially discovered in 1998. Esmeralda is proposed as the probable source of the remaining, un-salved wreckage

Reconstructing the history of ocean wildlife around Ascension Island

1. In 2016, the UK government announced plans for a large-scale Marine Protected Area around Ascension Island, a UK Overseas Territory in the South Atlantic. 2. To improve baselines for marine life to support ambitious conservation and assess change over time, archives were searched for historical accounts of wildlife from Ascension's discovery in 1501 to the present. For more recent changes, 139 interviews with past and present inhabitants were conducted. 3. Ascension's marine life has, from first discovery to the present, been consistently remarked upon for its exceptional abundance. Historical sources indicate declines in seabird and turtle populations from human exploitation and introduction of rats and cats. They are recovering with good management, although still below pre-settlement abundance. 4. Interviews with residents indicate more recent changes, notably declines in catch per unit of fishing effort at popular shore angling sites, a decline in yellowfin tuna (Thunnus albacares) and increase in Galapagos sharks (Carcharhinus galapagensis). 5. What is very notable, however, based on the interviews, was that there was no temporal signal suggestive of recent systemic decline, in marked contrast to many parts of the world where recent wildlife declines have been pervasive and steep. Ascension represents a remarkable and immensely important centre of abundance in a sea of depletion and change, warranting full protection for all the island's waters