2011年3月17日星期四

Roman anchors were made of wood and lead

As opposed to stone anchors of earlier periods. Douglas Haldane, a nautical archaeologist, has divided the wooden-anchor stocks into eight types (Haldane 1984: 1-13; 1990: 19-24, see diagram on page 21). Five of the types were used in the first century AD, Type IIIA, IIIB, IIIC, IVA and IVB (Haldane 1984: 3,13).The Type III anchors are made up of five parts (for pictures, see Bonanno 1992: Plate 67; Cornuke 2003: Plate 7, bottom). The main part is the wooden shank, usually made of oak, which has a lead stock across the upper part. Haldane subdivides the Type III anchors into three parts based on the design of lead stock. Type IIIA is made of "solid lead with no internal junction with the shank." Type IIIB is made of "solid lead with lead tenon through [the] shank." Type IIIC is made of "lead with [a] wooden core" (1984: 3). This core of wood, called a "soul," goes though the shank in order to pin the stock to the shank (Kapitan 1969-71: 51). On the bottom of the anchor are two wooden flukes, sometimes tipped with metal (usually copper and called a "tooth"), perpendicular to the anchor stock. A "collar" made of lead, sometimes called an "assembly piece," secures the flukes to the shank (Kapitan 1969-71: 52; Cornuke 2003: Plate 6, bottom; in the picture the collar is below the anchor stock).When an anchor is dropped into the sea, the heavy lead stock brings the anchor to the bottom of the sea. One fluke then digs into the sea bottom. The stock also keeps "the anchor cable pulling at the correct angle to the fluke" (Throckmorton 1972: 78).Mr. Cornuke concluded from his research that the anchors from an Alexandrian grain ship "would have been huge, lead-and-wooden Roman-style anchors common on huge freighters like the one Paul sailed on" (2002: 15).Nautical archaeologists and divers generally find only the anchor stocks and the collars and not the wooden parts because the wood rots in the sea. However, that is not always the case. Sometimes the wooden core, or "soul" still is found inside the stock. Wood can also be found in the collar (Kapitan 1969-71: 51, 53). In some cases the wood does not disintegrate. A case in point is the wooden anchor from a 2,400 year-old shipwreck off the coast of Ma’agan Mikhael in Israel (Rosloff 2003: 140-146).Sometimes lead anchor stocks have inscriptions or symbols on them. Symbols may be of "good luck (dolphins, caduceus), or related to the sea (shells) or apotropaic (Medusa head)." Also are found "numbers, names of divinities (= names of ships), e.g. Isis, Hera, Hercules, and rarely, names of men ... [that] may provide evidence for senatorial involvement in trade" (Gianfrotta 1980: 103, English abstract).One of the reasons antiquities laws are so tough is to prevent divers from looting sunken ships and removing, forever, valuable information such as the wood which could be used to carbon date the anchor and identify the type of wood used for making anchors. Some Israeli nautical archaeologists have begun to use carbon dating to date some of their shipwrecks (Kahanov and Royal 2001: 257; Nor 2002-2003: 15-17; 2004: 23). Archaeologists also work to maintain any inscriptional evidence on the anchor stock.For a brief survey of the recent developments in the maritime heritage of Malta, see Bonanno 1995: 105-110.The first anchor (#1) described in Mr. Cornuke’s book was found by Tony Micallef-Borg and Ray Ciancio in front of a big cave in the outer Munxar Reef at about 90 feet below the surface (2003: 101-105). When it was discovered in the early 1970’s, it was only half an anchor that was either "pulled apart like a piece of taffy" (2003: 121) or sawn in half with a hacksaw (2003: 231, footnote 18), depending on which eyewitness is most reliable. The recollection is that it was three or four feet long, with a large section cut off (2003: 102). The discoverers melted it down for lead weights not knowing its historical and archaeological value. One diver, Oliver Navarro, had two small weights with "MT" stamped on them for Tony Micallef-Borg. (Actually "MT" is the reverse image of Tony’s initials, see Plate 6, top). There is a drawing of the anchor at the top of Plate 7.Unfortunately, #1 was melted down. If it had been found in a controlled archaeological excavation and it contained an inscription, it would have been helpful in identifying the ship or its date.In a reconstruction of how the anchor stock was ripped apart, the author surmises that this was the first anchor thrown from the Apostle Paul’s ship and then "ravaged by the reef and the waves" (2003: 122, 123). The problem with this scenario is that a fluke goes into the seabed where it would serve to slow down the ship, not the anchor stock. If anything had been torn apart like taffy it would have been the collar, not the anchor stock, assuming the wooden fluke did not break first. More than likely, the anchor stock was sawn in half by means of a hacksaw by some unknown person in modern times.The second anchor (#2) was also found in the early 70’s and was a whole anchor stock found near anchor #1 (2003: 105-110). It was brought to shore by Tony Micallef-Borg, Ray Ciancio, Joe Navarro and David Inglott and taken to Cresta Quay (Cornuke 2003: 105, 106). It eventually came to rest in the courtyard of Tony Micallef-Borg’s villa."Tony's anchor" (2003: 125) is described by different people as a "large anchor stock" (2003: 106), a "huge anchor" (2003: 114), as a "large slab of lead" (2003: 126), and a "massive Roman anchor stock" (2003: 126). Unfortunately, unlike anchor stocks #1, #3, and #4, there are no measurements given in the book for this one. The only size indicators are the adjectives "large", "huge", and "massive."The reader viewing the photographs of anchors #2 and #3 on Plate 5 might get the impression that anchor #2 (bottom) was much larger than anchor #3 (top). The bottom picture was taken with the anchor on a bed sheet with nothing to indicate the actual size. Anchor #3 has three men squatting behind the anchor to give some perspective of size. The impression the reader would get is that anchor #2 is almost twice the size of anchor #3. If these anchors were published in a proper excavation report both anchors would have the same scale in front of them and the photograph of each anchor would be published to the same scale. It then would be seen that anchor #2 is considerably smaller than anchor #3.On Friday, January 14, 2005 and Monday, January 17, 2005 I visited the second floor of the Malta Maritime Museum in Vittoriosa. "Tony’s anchor" was tagged "NMA Unp. #7/2 Q’mangia 19.11.2002." This anchor stock came from the village of Q’mangia and was handed over to the museum on November 19, 2002, only four days before the amnesty expired (2003: 223).The anchor stock was one of the smallest on display, measuring about 3 feet, 8 inches in length. Large Alexandrian grain ships would have had for the stern much larger anchors than this one. The author’s lack of quantifiable measurements regarding the anchor stock keeps the reader uninformed about its actual size. This anchor stock is a lead toothpick compared to "huge, lead-and-wooden Roman-style anchors" that Mr. Cornuke surmised would be on the ship (Cornuke 2002: 15).The "Museum Archaeological Report" for 1963 describes an anchor stock found off the coast of Malta. It was an "enormous Roman anchor stock lying on the sea bed 120 feet below the surface 300 yards off Qawra Point... its dimensions, 13 feet 6 inches long, were confirmed.... On the same occasion part of the same or another anchor, a collar of lead 84 cms. long, was retrieved from 25 feet away from the stock" (MAR 1963: 7; Fig. 6; Plate 3). It weighed 2,500 kg, which is two and a half metric tons! (Guillaumier 1992: 88). This anchor stock is the largest anchor stock ever found in the Mediterranean Sea and most likely came from an Alexandrian grain ship. It is in storage in the National Archaeological Museum in Valletta.

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