Tug Management

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Tug Management

Tug Management

The EIVA Tug Management System (TMS) is an optional add-on software module to the NaviPac Integrated Navigation software. The TMS supports multi-vessel operations and its primary applications comprise:

- Barge/tug management
- Anchor handling
- Rig moves
- Pipe- and cable lay

The TMS passes positional data between multiple NaviPac systems by use of telemetry communication links. This allows the NaviPac system onboard each individual vessel to track and display all vessels connected. Major features of the TMS module includes:

- Automatic calculation of barge routes
- Monitoring of real-time anchor pattern
- Handling of mid-line buoys
- Inter-vessel communication via telemetry polling system
- High visual impact



NaviPac Barge setup: iSurvey	Click on picture to view larger scale

Inter Vessel Communication

Media • WLAN • Radio modems • Telemetry Polling Standard XF • NaviPac • IMCA • WinFrog • Tracks • Apache • AIS • etc

Controlling the system from barge

All TMS tasks are handled in a TMS master on the barge: • Graphical control from Helmsman’s Display and standard interface via RIGMON server application. • Assigning tug’s to anchors, • Controlling anchors • Moving anchors and planning new location • Assigning runlines • Assigning waypoints • Commands to tugs • Remote monitor and control of tug setup (geodesy, offsets, GPS status, …) The video clip illustrates a scenario where a tug boat is assigned to an anchor located on the barge and follows the working sequence from the anchor is picked-up until it’s dropped on the seabed.

Automated display on the tug

The tug boat display can be operated hands-free • Automatic zoom and pan • Automatic assignment • Automatic steering control The video clip illustrates a scenario where a tug boat is assigned to an anchor laying on the seabed and follows the operation while the tug approaches the location. Note the range/bearing steering information and automatic zoom which gives the captain the ultimate control without having to touch the system.



• Messages and commands from the barge • State changes • Automatic location and pickup/drop commands is send back to the barge and hereafter distributed to all other vessels in the operation. • Reception and activation of runlines and waypoints The video clip illustrates a scenario where a tug boat has an anchor onboard and follows the operation while approaching the drop zone.

Lay Barge Operations

NaviPac includes a series of features supporting lay operations – no matter if it is cable or pipe. All lay control is handled in 2D and 3D graphical presented data to support the lay Master with the optimal control. • Barge and pipe runlines • Cable overlength • Catenary touch down monitoring • 3D online display The enclosed video demonstrates a real scenario on AcergyPiper where the lay process involves planned pipe route and up to three derived barge routes. Each barge route is controlled individually to make sure that the barge maintains the correct position and heading to ensure that the touch-down point hits the correct location.

References
Acergy Group (Worldwide) - Andrews Survey, UK- Asean Cableships Pte Ltd, Singapore - A2Sea, Denmark - C&C Technologies Inc, USA - CT Offshore, Denmark - Digital Horizon Company, Nigeria - Geodetic Offshore Services Ltd. (GOSL), Nigeria - Heerema Marine Contractors Netherland, Holland - HSAP Sdn Bhd, Malaysia - iSurvey, Norway - Locatech Sarl, Cameroon - Maridive Offshore Projects, Egypt - National Petroleum Construction Company (NPCC), Egypt - NCS Subsea, USA - Petroleum Marine Services, Egypt - PT Seascape Surveys, Indonesia - Sahara Petroleum Services Company (Sapesco), Egypt - Upstream Petroleum Services Ltd, U.A.E. - UST21, Korea - Watergate Technology Services Ltd, Nigeria