About EK Geotechnical Survey LLC (EKGS)
The geotechnical survey vessel EK HAYATE, owned by EK Geotechnical Survey LLC, entered into service under Japanese flag, capable of providing offshore drilling, sampling and in-situ testing.
By coupling the Japanese vessel operational expertise of “K” Line Group and the international offshore geo-survey expertise of EGS, EK Geotechnical Survey LLC and EK HAYATE provides offshore survey services to meet growing demand in Japan and regional sustained energy markets.
EGS Group is an experienced offshore geo-survey company. Consistent high-quality deliverables have enabled EGS to secure a market leader position in the telecommunication cable route survey sector and to expand into the offshore wind sector.
In addition to international track records, EGS Survey has a 20-years track record of telecommunication cable route survey in Japanese coastal waters.
- In 1974 EGS Group was founded
- 50 years of geo-survey expertise
- 15 offices around the world
- 7 survey vessels in operation
- High-quality, trusted survey data
Highlights
EK HAYATE
EK HAYATE is Japanese flagged geotechnical survey vessel complying to Japanese crew and Japanese cabotage requirements.
Geo-survey apparatus has strong truck record and along with superior living quarters makes it an ideal vessel for offshore geotechnical investigations.
- Length
- 78.0 meters
- Breadth
- 17.0 meters
- Draught
- 6.3 meters
- Deck area
- 750m2
- Berths
- 50 (crew of 20 plus 30 passengers)
- Flag
- Japan
- Home Port
- Kure, Hiroshima Prefecture
- IMO number
- 9491551
- Start of service
- September 2024
- Moonpool
- 4.8m x 4.8m
Drill rig/Maritime laboratory
The EGS drilling rig is able to perform in the weather and ocean condition typical of around Asia-Pacific. The twin-tower rig has a 4 meters motion compensation system to stabilize offshore drilling operations.
An onboard laboratory facility equipped to carry out sample management, logging and laboratory testing under controlled conditions, minimizing sample disturbance caused by transportation and accelerating data delivery program.
- Features Drill Rig
- 18-meter gate type, 4-meter motion compensation
- Water depth
- 15 meters to 250 meters
- Drilling depth
- 300 meters drill string
- Drill bit
- 200 mm diameter
- Sampling diameter
- Outer diameter, 76 mm; inner diameter: 70 mm
- PS logging
- International and Japanese standard PS Logging can be provided
- Rock Coring
- Motion-compensated installation is under planning subject to scope
- Sample extraction and observation
- Moisture content measurement
- Wet Density Measurement
- Density Measurement, plus Atterberg/particle size distribution
- Handheld penetrometer
- Vane shear testing
- Unconsolidated undrained (UU) triaxial compression test
- Point Load Test
- Thermal Resistivity Test
Cable Route survey by vessels operated by “K” Line Group companies
Example of vessels in 2024 by “KAIYU” and “AKATSUKI”
Provided submarine power cable route survey for Japanese offshore wind project
| Characteristic | Details |
|---|---|
| LOA | 62.40m |
| Breadth | 14.00m |
| Deck Area | 310.5m2 |
| POB | 40passengers |
| Registry | Japanese-flagged/ClassNK |
Vessel specifications and characteristics
Equipped with dynamic positioning system
A-frame outfitting supports CPT and coring work
Minimum water depth 10 to 15 meter
Vessel operation specification and characteristics
Owner: Offshore Operation Corporation (“K” Line Group)
Japanese-flagged and provide cabotage operation (home port: Kurihama)
Japanese marine crew full allocation (with DP Operator certs)
Access to international non-open port
No special permit required to work in Japanese coastal water
Examples of survey equipment for cable route survey
Wide range of survey equipment can be arrange including importation
Seabed CPT: “Neptune 5000”
| Characteristics | Details |
|---|---|
| Water Depth | 3000m |
| Penetration Depth | 20m |
| Additional Information | Real-time operation and data collection |
Sampling: 6 meters “Vibro Corer 6000”
| Characteristics | Details |
|---|---|
| Sample Length | 3 m / 6 m (can extend to 9 meters) |
| Core Barrel | Inner circumference: 113 mm; outer circumference: 121 mm |
| Additional Information | Deploy by A-Frame |
Soil thermal resistance analysis: “Thermal Resistivity Test”
| Characteristics | Details |
|---|---|
| Measurable temperature | -2°C～ 60°C |
| Penetration Depth | ～5.5m |
| Additional Information | In-situ thermal resistivity test |
Happo-Noshirio cable route survey
EKGS has completed its first survey project for the Happo Town and Noshiro City Offshore Wind Power Project in Akita Prefecture. The survey was supported by group entities from both parties and the final geo-data deliverables were provided to client, OYO Corporation, on program.
