Patacho of Pedro Diaz – Institute of Nautical Archaeology https://nauticalarch.org Institute of Nautical Archaeology Thu, 07 Dec 2017 19:17:30 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.1 Final Days of 2014 Fieldwork: Excavation, Site Mapping, and Wrapping It All Up https://nauticalarch.org/excavation-site-mapping-and-wrapping-up/ Mon, 08 Dec 2014 20:45:50 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=304 The past week has been very busy as we extended our project a few days (thank you sponsors) to take advantage of the weather. We’ve had the opportunity to continue excavations on site EBT6 in an effort to expand the test pits and determine how complex the site is. We were successful in digging back to the depth that we were last year and expanding the survey area for mapping purposes. What we found was good news. In addition to the dozens of concretions that we encountered, we found some remains of timbers, charcoal, ceramic, and rope, as well as intrusive objects such as bottle caps. A few samples were recovered for analysis and dating purposes. This is noteworthy because we were unsure if the environment would be conducive to the long-term preservation of organic materials–and it appears that indeed it is. We still do not have a clear sense of the full extent of the site, but have determined from the data recovered this season that it warrants a close-order gradiometer survey to delineate its boundaries and further excavation on a larger scale to better understand what type of wreck this represents. The cannon and other selected diagnostic artifacts may be recovered for analysis and exhibit purposes next year, which will give us more clues to the origins of this wreck. The images below provide a glimpse of what has transpired during the final days of the 2014 project. In the coming months we’ll be finishing the site plans and artifact drawings, generating the field report, presenting our finds at international conferences, and planning for next year’s field campaign. Thank you for following our blog and thank you again to all the sponsors and volunteers who made this project a success this year. Seasons greetings

Divers deployed for recording tasks (photo GS)

Divers deployed for recording tasks (photo GS)

Photographing the wood block brought up in a fishing net in the past. (photo Lolita Petriconi)

Photographing a wood block of unknown age brought up in a fishing net and graciously lent to us by a Sagres local. (photo Lolita Petriconi)

Generating the 1:1 scale drawing of the wooden block. (photo Lolita Petriconi)

Generating the 1:1 scale drawing of the wooden block. (photo Lolita Petriconi)

EBT1 site plan in progress. (photo Lolita Petriconi)

EBT1 site plan in progress. (photo Lolita Petriconi)

Working on the EBT1 site plan. (photo Lolita Petriconi)

Working on the EBT1 site plan. (photo Lolita Petriconi)

Philosophy of the wooden block. (photo T. Fraga)

Philosophy of the wooden block. (photo T. Fraga)

En route to investigate a recent cannon find outside of the survey area. (photo Virgilio Rodrigues)

En route to investigate a recent cannon find outside of the survey area. (photo Virgilio Rodrigues)

Preparing the 2 x 6 meter EBT6 test pit grid to be carried into the water. (photo Lolita Petriconi)

Preparing the 2 x 6 meter EBT6 test pit grid to be carried into the water. (photo Lolita Petriconi)

Walking the EBT6 grid to the site. (photo Lolita Petriconi)

Walking the EBT6 grid to the site. (photo Lolita Petriconi)

Transporting the grid underwater. (photo still from video by J. Baço)

Transporting the grid underwater. (photo still from video by J. Baço)

Divers navigating the grid underwater to EBT6 for placement on site. (photo Lolita Petriconi)

Divers navigating the grid underwater to EBT6 for placement on site. (photo Lolita Petriconi)

Marking the positioning of the EBT6 grid. (photo still from video by J. Baço)

Marking the positioning of the EBT6 grid. (photo still from video by J. Baço)

Continuing excavation of EBT6. (photo Lolita Petriconi)

Continuing excavation of EBT6. (photo Lolita Petriconi)

Working on the EBT6 site plan. (photo A. Catsambis)

Working on the EBT6 site plan. (photo A. Catsambis)

Charcoal found at EBT6 site. (photo Lolita Petriconi)

Osseous remains at EBT6 site. (photo Lolita Petriconi)

EBT6 cannon excavation. (photo Lolita Petriconi)

EBT6 cannon excavation. (photo Lolita Petriconi)

Wooden remains discovered at EBT6. (photo Lolita Petriconi)

Wooden remains discovered at EBT6. (photo Lolita Petriconi)

Excavation around EBT6 cannon 1. (photo Lolita Petriconi)

Excavation around EBT6 cannon 1. (photo Lolita Petriconi)

Adding new features to EBT6 site plan. (photo A. Catsambis)

Adding new features to EBT6 site plan. (photo A. Catsambis)

EBT6 site plan in progress. (photo A. Catsambis)

EBT6 site plan in progress. (photo A. Catsambis)

Post-dive photomosaic discussion. (photo Lolita Petriconi)

Post-dive photomosaic discussion. (photo Lolita Petriconi)

Follow the rainbow to the shipwreck. (photo Lolita Petriconi)

Follow the rainbow to the shipwreck. (photo Lolita Petriconi)

Recording concretions at EBT6. (photo Lolita Petriconi)

Recording concretions at EBT6. (photo Lolita Petriconi)

Recording of the anchor (EBT9) ring. (photo Virgilio Rodrigues)

Documentation of the anchor (EBT9) ring. (photo Virgilio Rodrigues)

Examining the sea state early in the morning. (photo Virgilio Rodrigues)

Examining the sea state early in the morning. (photo Virgilio Rodrigues)

Amazing view of Martinhal. (photo Virgilio Rodrigues)

Stunning view of Martinhal on the final days of the 2014 field campaign. (photo Virgilio Rodrigues)

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Dredging Site EBT6 (cannon site) https://nauticalarch.org/dredging-site-ebt6-cannon-site/ Sat, 29 Nov 2014 01:38:07 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=297 The past couple of days, in between spells of disagreeable weather, we managed to dredge site EBT6 to the level that we excavated last year in an effort to continue documenting the site. We identified several new features and concretions, and are in the process of creating the site plan. Below is a video of our team preparing the site for documentation.

 

See our Facebook page for more information regarding our last days of the project as we wrap up the field season!

https://www.facebook.com/pages/Navio-Pedro-Diaz/503198123024260

 

 

 

 

 

 

 

 

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Anchor Recording https://nauticalarch.org/anchor-recording/ Mon, 24 Nov 2014 22:33:52 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=272 On Sunday we were prepared to work, rain or shine. Well, there was plenty of shine, so we got to work (most of us). And there were waves. Surfing waves. In fact the surfers arrived on the beach and started surfing while we worked. Not a good sign for working on shallow sites from a RHIB. We moved to deeper water instead and relocated the anchor for excavation and recording, which turned out to be quite successful.

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On Monday we returned to the anchor, set up the dredge, and re-excavated the site (designated EBT9). After excavation we recorded the heavily encrusted anchor and took scaled photographs around the site. Our second team of archaeologists investigated several more features and anomalies mapped during the 2012 and 2013 campaigns, and discovered two buried ferrous objects which will be the subject of future test excavation. In the evenings we continued with the EBT1 site plan as well as the recording of a wooden block that was recovered in fishing nets and may be associated with one of the shipwrecks in the cove.

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(photos: Lolita Petriconi)

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(photos: Virgilio Rodrigues)

 

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Public Outreach Events https://nauticalarch.org/public-outreach-events/ Fri, 21 Nov 2014 10:35:12 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=262 Poster

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Poster for project presentations and pamphlet for Fortalaza de Sagres presentations (poster by Council of Vila do Bispo; pamphlet by Alexis Catsambis).

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Rain Part II https://nauticalarch.org/rain-part-ii/ Thu, 20 Nov 2014 23:00:57 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=243 20 nov 28

Visited the Fortaleza de Sagres to test our computers for the presentations to be held there on Saturday

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The sea state by the Fortaleza was much worse than what we experience on the sheltered site of the cape

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No don’t worry! We weren’t serious about letting our divers do a giant stride from the fortress walls.

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Testing the dredge pump and hoses in the marina

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Rain https://nauticalarch.org/rain/ Thu, 20 Nov 2014 22:03:40 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=232 Although it stormed the past two days we had a productive break from diving. We were able to attend a meeting with the Mayor on the project, shop for supplies, prepare the survey grid, assemble and test the pump and dredge for excavation, design a frame for the photomosaic, and work on the EBT1 site plan. Tomorrow there will likely be terrible visibility in the sea, but we are used to working in zero visibility environments so we intend to work as long as the weather allows.

The storm at mid morning

2014 team photo at project headquarters Martinhal Beach Resort and Hotel

2014 team photo at project headquarters Martinhal Beach Resort and Hotel

EBT1 site plan in progress

Visibility in the bay worsens

Visibility in the bay worsens

Meeting with the Mayor of Vila do Bispo

Meeting with the Mayor in Vila do Bispo

A school is a potential candidate to be converted into project conservation laboratory

A school is a potential candidate to be converted into project conservation laboratory

Outside of school and playground

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Vila do Bispo cultural center where the artifacts may be exhibited after conservation

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The weather cometh https://nauticalarch.org/the-weather-cometh/ Wed, 19 Nov 2014 00:08:49 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=199 We knew the weather was coming to ruin our plans, but decided to work today despite the wind and rain because the heavy pounding is due tomorrow. First things first, we decided to draw a greeting in the sand for our fellow Aggies.

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Next, we set out to sea to try and accomplish as much as possible before the storm. We returned to EBT1 and continued recording the site, getting scaled images and video of the objects we found yesterday, such as the iron knee. We also surveyed a massive grid 100 m x 60 m through the middle of the wreck site and recorded all features for the site plan. This plan will be the job of a few of our archaeologists during the evenings over the next few weeks.

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Our second team flew back and forth across the bay braving the wind and rain in our second RHIB, donated to the project by partners Subnauta, and investigated magnetic anomalies and multibeam features from the 2012 and 2013 surveys. We found nothing of interest except a partially-buried iron concretion which we discovered on the last dive. We marked that site for a return visit, then returned to the marina to wash dive gear and demobilize for the evening. Was a good day despite the chop and rain, and we remained on schedule.

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What’s that?? https://nauticalarch.org/whats-that/ Mon, 17 Nov 2014 23:35:11 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=194 Another day of fine diving allowed the team to relocate the EBT9 anchor site, which was reburied after last year’s excavation and documentation. After planting a victory flag at the site (actually a dive buoy), we moved on to investigate site EBT1 (19th century wreck discovered in 2012). One of the goals this year is to record this enormous, scattered, discontinous wreck, in order to create a site plan for interpretation. We easily relocated the site, set a 100 m baseline, and began recording the wreck.  We discovered an iron knee and other ship components buried shallowly in the sand, and set out to record as much as we could with the available daylight. One object, shaped like half of a rectangle, was unburied, measured, and sketched, but still remains an enigma to us. Perhaps part of a hatch coaming is one guess at this point… One of our goals tomorrow will be to continue recording new features of this site and documenting them for inclusion in the site plan.

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Relocating EBT6 https://nauticalarch.org/relocating-ebt6/ Mon, 17 Nov 2014 00:42:46 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=181 On the first fieldwork day we set out to relocate and mark the primary 2014 target-EBT6, the site of the two concreted cannon. We were successful in finding the target based on the coordinates recorded from last year, but found that the site was covered with sand, approximately 30 cm over the cannon. A good sign for the preservation of the site, but more difficult to relocate and excavate.

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With no time to lose, we planned a night dive to place a marker buoy over the site. Although we will not be excavating this site right away, we decided to plan ahead for the rough weather that we are expecting in a few days. The more sites that we can relocate and mark in clear water, the more work we’ll be able to do when the storm destroys the visibility. Good work but multiple dives in moderate surf takes a toll…

 

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Launching of the 2014 PPD Field Season https://nauticalarch.org/launching-of-the-2014-ppd-field-season/ Sat, 15 Nov 2014 02:07:04 +0000 http://nauticalarch.org/blogs/patacho-pedro-diaz/?p=145 The 2014 field season began today in Sagres, Portugal, with an opening ceremony held at Martinhal Beach Resort and Hotel. The event featured speeches from project supports and partners as well as a presentation by project directors outlining the progress of the 2012 and 2013 field campaigns and objectives of the 2014 fieldwork.

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In May of 2013 additional remote-sensing survey was undertaken, this time utilizing both gradiometer and multibeam echosounder. The 2013 gradiometer survey recorded a total of 28.2 km of data in the Cove of Baleeira, encompassing 0.17 km2 (43.7 acres). The combined 2012 and 2013 surveys total 41.5 km of data within the cove. Forty magnetic anomalies were detected and a large section of the seafloor was mapped via multibeam echosounder.

2012-2013 gradiometer coverage

2012-2013 gradiometer coverage

 

November 2013 marked the return of the archaeological investigation to groundtruth these anomalies and other contacts. Excavation, hydroprobing, and underwater surveying methods were used to investigate the potential of these targets. Among the discoveries were: more material from the late-19th or early-20th century wreck found in 2012; an early 19th-century wreck with cannon and timbers; concreted anchors from antiquity; buried rigging elements; and two encrusted cannon possibly dating to the 17th or 18th century. Test excavations were conducted around the cannon site (EBT6) and concreted artifacts were discovered buried in the sand below (including remnants of iron fastenings). As this occurred during the final days of the 2013 field project, this site was reburied and made a priority for the 2014 fieldwork.

Cannon at EBT17. (photo: Augusto Salgado)

Cannon at EBT17. (photo: Augusto Salgado)

Iron mast components from wreck site EBT1 (photo: Virgílio Rodrigues)

Iron mast components from wreck site EBT1 (photo: Virgílio Rodrigues)

anchor at EBT9 site (photo: Virgílio Rodrigues)

anchor at EBT9 site (photo: Virgílio Rodrigues)

cannon found at EBT6 site. (photo: Virgílio Rodrigues)

cannon found at EBT6 site. (photo: Virgílio Rodrigues)

Test excavation grid over EBT6 site. (photo: Lolita Petriconi)

Test excavation grid over EBT6 site. (photo: Lolita Petriconi)

While the principal objective is to locate and study the navio of Pedro Diaz, the significant nautical history of the region has begun to emerge through our survey of the Cove of Baleeira. In addition to the investigation of the primary wreck site, we have expanded our work to record all significant finds in the bay to help bring light to the extraordinary maritime culture of this region, and have been supported in this endeavor by all of our previous sponsors as well as the Council of Vila do Bispo, who has encouraged our efforts and helped fund our research toward the long-term goal of sharing and exhibiting the Algarve’s nautical heritage in local museums.

This year we intend to record the wrecks discovered last year, investigate an additional 31 magnetic and multibeam anomalies discovered during remote-sensing operations, and expand the excavation of site EBT6 (cannon site) to determine whether this represents 17th-century shipwreck remains–which may provide clues to the whereabouts of Diaz’s elusive vessel. Stay tuned over the next two weeks to see what else we encounter in the Cove of Baleeira as we work to unveil the cove’s extraordinary maritime history, which is also a stone’s throw away from the incredible Fortaleza de Sagres–the site of Prince Henry the Navigator’s famed (and some would claim mythical) school for navigation.

 

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