FLEET
For the construction, installation, operational and maintenance stages of offshore wind projects, Crew Transfer Vessels (CTVs) are the workhorse of the offshore wind support vessel fleet – the flexibility, versatility and multi-function capabilities drive its popularity. These will be US flag Jones Act vessels - US-built, crewed and operated by 3-5 US seafarers and majority-owned by US citizens.
Typically working 12-hour days, these vessels depart supply bases along the US east coast every morning and transit high speed to offshore wind fields where they transfer technicians, gear, spare parts and equipment to the wind turbines, picking them up and returning to port in the evening. At times, they will remain in the fields for 24-hour operations.
BOT currently offers several CTV platforms, all capable of 24/7 crew-only operations: A 31-meter hybrid-ready platform that can be configured for 12- or 24-hour operations for 24-34 technicians or, with additional accommodations in the superstructure, for 24/7 operations offshore supporting an overnight compliment of up to 10 service technicians. Alternatively, we offer a 27-meter platform for 12- or 24-hour operations carrying 24-34 technicians.
DESIGNS
BOT currently has two CTV platforms for support of client transport requirements: a 27-meter or a 31-meter, high speed aluminum catamaran with crew accommodations on board allowing for 24/7 operations.
A key design accomplishment was to future-proof the platforms against a background of rapidly changing technology and operational criteria. The platforms represent conventionally powered diesel platforms fueled by ultra-low sulfur diesel fuel or biodiesel, capable of evolving to zero emission operations as technology supports this progression. Initially powered by internal combustion engines fueled by diesel or biodiesel (HVO100), and later, synthetic diesel, the 31-meter platform can accommodate future alternative energy powering solutions such as hybrid-electric, electric and hydrogen going forward.
The vessels will be US flag
IACS-classed
Jones Act Compliant
Roadmap to Zero Emissions
Holding USCG Subchapter L inspection compliance under US CFR’s
27-meter Platform (4 Cabins)
31-meter Platform (4 OR 8 Cabins)
The specification details the basic design for a 27m windfarm support vessel for build and operation in the US. The vessel is an aluminum catamaran and will incorporate a symmetric deck house with accommodations located on the main deck and upper deck of the superstructure.
The basic design includes four cabins to provide accommodations for up to eight persons. Three crew are required for 12-hour operation – for operation beyond 12-hours the crew numbers five persons. An optional superstructure design can be specified that includes four additional cabins (total of eight) to accommodate up to 10 technicians for overnighting on a 24/7 basis if required.
The main deck aft will contain a wet room / changing area with two toilet/shower spaces and lockers. A pantry and crew mess area will be provided outside the wet room. Stair access to the hulls is provided on the inside of the main deck cabin. External access is provided via weathertight doors at the rear of the accommodation space. Cargo can be stowed on the forward & aft decks. A crane is installed on the port side of the forward deck.
A raised wheelhouse will be located above the main accommodation cabin with a forward helm station with chairs and a chart table and stowage cupboards. A medical area will be defined to accommodate an injured technician or crew member. Stairs from main deck accommodation spaces lead into tank voids on each side. Engine rooms are located immediately behind each tank void.
Transit seating is initially configured for 24 service personnel, reconfigurable for seating up to 34.
Depending on the charterer’s requirements, the vessel can be driven by quad IPS drives, controllable pitch propellors or waterjets, all powered by EPA tier 3 diesel engines, with the ability to transition into hybrid or reduced emission operation.
The specification details the basic design for a 31m windfarm support vessel for build and operation in the US. The vessel is an aluminum catamaran and will incorporate a symmetric deck house with accommodations located on the main deck and upper deck of the superstructure.
The basic design includes four cabins to provide accommodations for up to eight persons. Three crew are required for 12-hour operation – for operation beyond 12-hours the crew numbers five persons. An optional superstructure design can be specified that includes four additional cabins (total of eight) to accommodate up to 10 technicians for overnighting on a 24/7 basis if required.
The main deck aft will contain a wet room / changing area with two toilet/shower spaces and lockers. A pantry and crew mess area will be provided outside the wet room. Stair access to the hulls is provided on the inside of the main deck cabin. External access is provided via weathertight doors at the rear of the accommodation space. Cargo can be stowed on the forward & aft decks. A crane is installed on the port side of the forward deck.
A raised wheelhouse will be located above the main accommodation cabin with a forward helm station with chairs and a chart table and stowage cupboards. A medical area will be defined to accommodate an injured technician or crew member. Stairs from main deck accommodation spaces lead into tank voids on each side. Engine rooms are located immediately behind each tank void.
Transit seating is initially configured for 24 service personnel, reconfigurable for seating up to 34.
Depending on the charterer’s requirements, the vessel can be driven by quad IPS drives, controllable pitch propellors or waterjets, all powered by EPA tier 3 diesel engines, with the ability to transition into hybrid or reduced emission operation.
VESSELS
27-meter Platform (4 Cabins)
The specification details the basic design for a 27m windfarm support vessel for build and operation in the US. The vessel is an aluminum catamaran and will incorporate a symmetric deck house with accommodations located on the main deck and upper deck of the superstructure. Four cabins provide accommodations for up to eight persons – for 24-hour operation, five crew will normally be housed in three cabins.
Profile
Main Deck - 4 Cabins
Hull Deck – 4 Cabins
31-meter Platform (4 or 8 Cabins)
The specification details the basic design for a 31m windfarm support vessel for build and operation in the US. The vessel is an aluminum catamaran and will incorporate a symmetric deck house with accommodations located on the main deck and upper deck of the superstructure. Four cabins provide accommodations for up to eight persons – for 24-hour operation, five crew will normally be housed in three cabins.
Profile
Main Deck – 8 Cabins
Upper Deck – 8 Cabins
Hull Deck – 8 Cabins