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Metadata: 2001, Fugro, North Hoyle, Geotechnical Site Investigation
Abstract:
On behalf of NWP Offshore Limited (NWP), a marine geotechnical investigation has been performed in the area of North Hoyle located in Liverpool Bay Irish Sea, between 6 and 8km offshore from the North Wales coastline between Rhyl and Prestatyn. The objective of the investigation was to obtain a preliminary geological overview of the ground conditions and geotechnical data to be used in the conceptual design of the turbine foundations. This report presents the results of the fieldwork and the subsequent laboratory testing undertaken.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 29853 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | 2001, Fugro, North Hoyle, Geotechnical Site Investigation |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Geotechnical Site Investigation |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | 5c7cef97-1dac-43c3-a00b-b54cabc9246a |
| Resource Identifier | This is the code assigned by the data owner. | TCE-1692 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | series |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2001-08-04 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2001-10-22 |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | On behalf of NWP Offshore Limited (NWP), a marine geotechnical investigation has been performed in the area of North Hoyle located in Liverpool Bay Irish Sea, between 6 and 8km offshore from the North Wales coastline between Rhyl and Prestatyn. The objective of the investigation was to obtain a preliminary geological overview of the ground conditions and geotechnical data to be used in the conceptual design of the turbine foundations. This report presents the results of the fieldwork and the subsequent laboratory testing undertaken. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The North Hoyle Offshore Windfarm is the first of the UK's Round 1 wind farms. Due to the wind farm pre-dating the data clauses which The Crown Estate insert into all offshore windfarm leases, the offshore wind farm developer had no obligation to provide survey data to The Crown Estate. However, despite this, The Crown Estate are pleased to have worked with Innogy and Greencoat Capital to retrieve as much of the historical data as possible. All of the retrievable data can now be found on the MDE. Please see further details in the metadata lineage. All boreholes were performed from the jack-up platform Coastal Explorer. The platform consists of three pontoons linked together with four legs mounted externally on bearings to provide maximum stability. Each leg is 25 m in length, giving a maximum working height of 22 m from the underside of the platform to the seabed, dependant on sea state, tides and leg penetration. The platform was fitted with a 12.0 m high twin CRII drilling mast incorporating a Dando 250 high speed power swivel. The platform is self-propelled and driven by integral diesel engines mounted in the outer two pontoons. An Equipment Data Sheet for this platform is presented in Appendix A. Cable tool percussive boring techniques were used in all boreholes to advance casing of 200 mm and 150 mm diameter through the soil generally to depths from 2.0 m to 15.2 m, after which rotary coring was employed. Samples were recovered and in situ tests performed as per NWP and HBR's requirements. Rotary coring was performed in all boreholes using the Geobor S triple tube wireline system. This comprises an outer casing measuring 146 mm in diameter, an inner barrel which is dropped inside the outer casing and a plastic transparent coreline which fits inside the inner barrel. During the coring process the outer casing is advanced a maximum of 1.5 m into the bedrock with the inner barrel, which is then retrieved with the core inside the coreline. Boreholes were advanced to termination depths of between 27.10 m and 32.0 m. Cores were obtained both in the overlying till and bedrock, and in situ tests performed down to the top of the bedrock as per HBR's requirements. A Poly Crystalline Diamond (PCD) face discharge bit was used during all coring operations and this proved effective in all strata cored. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Origin: Project Management Support Services (PMSS) |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sedimentary structure |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Rock porosity and permeability | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Feasibility | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Consenting | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Agreement for Lease Area | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Geology | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.431056892067 |
| East | The eastern-most limit of the data resource in decimal degrees | -3.4136468165418 |
| South | The southern-most limit of the data resource in decimal degrees | 53.403022695127 |
| West | The western-most limit of the data resource in decimal degrees | -3.4802186604714 |
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | ABPmer | |
| Phone | +44 (0)23 8071 1840 | |
| enquiries@abpmer.co.uk | ||
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Fugro GeoConsulting Limited | |
| Phone | +44 (0)1491 820800 | |
| unknown | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | RWE | |
| support@rwe.com | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-1692/summary |
| Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk | |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | There will be no limitations when published on the Marine Data Exchange | |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | Data Must be used in accordance to the Marine Data Exchange's Terms of Use: https://www.marinedataexchange.co.uk/content/info/terms-of-use |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2022-12-12 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-08-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-08-13 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.2 |