A Box Containing Carpenter's Accessories from The Akko 1 Shipwreck,Israel: Archaeometallurgical Analysis of Surviving Ironwork

The Akko 1 shipwreck was an Egyptian armed vessel, built at the beginning of the 19th century. A wooden saw handle and a box containing iron nails and two split pins were discovered towards the stern. Given their function, location and context, these were part of the ship's carpenter's tools and accessories. A methodology was developed for conducting systematic metallurgical analysis in order to understand the manufacturing process of the surviving ironwork items, as well as to enlarge our knowledge regarding ironworking technologies during the early 19th century. Such methodology may assist in the future understanding of the technological evolution of similar wrought‐iron objects. The results demonstrated that the artefacts have a wrought‐iron heterogeneous microstructure and were manufactured by hot‐working prior to surface hardening by pack carburization.     

Maʻagan Mikhael B,Israel: a preliminary report of a Late Byzantine–Early Islamic period shipwreck

The Ma?agan Mikhael B shipwreck was found in 1.5m of water, beneath 1.5m of sand, 70m off the Mediterranean coast of Israel. The hull remains are in a good state of preservation, comprising the endposts, aprons, framing timbers, hull planks, stringers, and bulkheads. The finds comprise rigging elements, wooden artefacts, organic finds, animal bones, glassware, coins, bricks, stones, ceramic sherds, and complete amphoras. The shipwreck was dated to the 7th–8th centuries AD; which makes it an exceptional source of information regarding various aspects of ship construction, seamanship, and seafaring in the area in Late Antiquity.     

Mast-Step Coins among the Romans

The archaeological evidence of more than a dozen ancient shipwrecks indicates that the tradition of placing a coin inside the mast-step of a ship's hold probably originated with the Romans. The mast-step coin phenomenon, which persisted through the Middle Ages and continues in various forms today, has often been characterized according to the modern concept of 'luck'. The custom was, however, not one of an exclusively maritime nature; rather, it was ultimately derived from a long-standing religious tradition that can be traced back to the consecration of the earliest Greek temples.
© 2007 The Author     

A 15th‐Century Wreck of an Ordnance‐Carrying Ship from Atlit North Bay,Israel

In 1977, a shipwreck assemblage was discovered off Atlit, Israel. Finds included three iron anchors, a large bombard, four swivel guns, stone and lead shot, and bronze helmets. The bronze bombard (2210 kg, 3.247 m long) contained a wooden wad and remnants of what may have been gunpowder. The swivel guns (each 185 kg) were bronze, with swivels and the tillers of iron. Twenty (or 21) bronze helmets were recovered. The findings provide rare evidence for the mounting of heavy ordnance on the bow of a galley or ship in the 15th century.     

“长江口二号”沉船出水青花瓷中的污染物研究

位于长江入海口的“长江口二号”清代沉船是中国目前发现的保存最为完整的古代木制沉船之一，已于2022年11月完成整体打捞。在进行水下考古调查时，沉船出水的部分青花瓷出现的病害现象引起了考古工作者的关注，特别是裂纹中黑色污染物及表面铁锈状污染物对文物的外观产生了很大影响。本工作选取了三件具有典型被污染特征的青花瓷标本作为代表，使用能量色散X射线荧光分析(EDXRF)、光学显微镜(OM)、X射线衍射分析(XRD)、拉曼光谱分析(Raman)和扫描电子显微镜-能谱分析(SEM-EDS)等方法，对污染物进行了研究，探讨了其形成原因以及环境的影响作用，并对其潜在危害进行了分析。研究表明，污染物主要以方解石、菱铁矿等碳酸盐以及铁的氧化物、氢氧化物和硫化物为主。长期处于河口淤泥中的还原性环境是导致菱铁矿和亚稳的铁硫化物形成的原因，船体中铁质构件腐蚀对局部环境的污染是重要的影响因素，这也反映出被污染的青花瓷所处位置和环境的特殊性。出水的部分青花瓷釉中裂纹的形态表明其形成是由物理撞击造成，而釉中硅灰石晶体的选择性腐蚀会导致腐蚀坑的形成，裂纹和腐蚀坑均为外部污染物进入釉层内部提供了通道，导致瓷器劣化。出水后...     

Mapping of the Buried Yarmouth Roads Wreck, Isle of Wight, UK, using a Chirp Sub-Bottom Profiler

Remains of the 16th-century Yarmouth Roads wreck, buried in sediments, were imaged using high-resolution geophysical techniques. The remains appear as strong reflectors underlain by an acoustic blanking zone, which was used to create maps of the wreck material. Close survey line-spacing allowed the construction of contour maps and hull sections, which revealed that the bow and stern sections are tilted to port at different angles, implying that they are detached. The seismic data have enhanced our understanding of the site beyond what was known from conventional archaeological investigations and confirms that this wreck was once a large carrack.
© 2007 The Authors     

Arade River Archaeological Complex: Dredges and Archaeology

Situated on the southern coast of Portugal, the Arade River mouth has been visited and inhabited for over three millennia. Dredging operations, in the first and last decades of the 20th century, brought up the importance of Arade's cultural heritage and triggered a large-scale project of study, survey, and archaeological excavation. This project is conducted by Centro Nacional de Arqueologia Náutica e Subaquática, the Portuguese agency for nautical archaeology, under the direction of Francisco Alves, and with the support of both local and state authorities. This paper is a preliminary assessment of the finds made so far.
© 2005 The Nautical Archaeology Society     

The Navarino Naval Battle Site, Greece—an Integrated Remote-Sensing Survey and a Rational Management Approach

An integrated remote-sensing survey was carried out in Navarino Bay, where in 1827 a battle was fought between the allied British, French and Russian navies and the Turkish-Egyptian fleet. Integration and interpretation of the remote-sensing data has shown the presence of shipwreck remains on the sea-floor and possible shipwrecks buried under the sea-bed. It has also shown that the historical remains are under threat from the heavy anchors of tankers which sink into the sea-bed and, when dragged, dig furrows, thus disintegrating the shipwreck remains. To protect the sites the construction of permanent anchoring systems away from the shipwreck remains is recommended.
© 2005 The Nautical Archaeology Society     

Exploration of Basel Mission Company shipwreck remains at St George's Reef off Goa, West Coast of India: impact of the Basel Mission Co. on society and culture

A systematic exploration of shipwrecks has been carried out in Goa waters since 1997. Exploration off St George's Reef has brought to light the remains of a shipwreck at a depth of 15 m, containing various types of terracotta artefacts intended for house construction. Basel Mission Tile Works 1865' is impressed on bricks, roof and floor tiles. Study shows that the company was active in manufacturing terracotta and exported it to Africa, Australia, Borneo, Sumatra, and other countries. It has been renamed 'Comtrust', and is still producing terracotta using the same techniques. The impact of the Basel Mission Co. on society and culture is discussed. A study of finds of wrecks in the Mangalore and Calicut areas was undertaken.