General: BUGSIER 1 is a Azimuth tractor tugs with their propulsion units beneath
the bow. A protective plate was fitted in front of the propulsion units to shield the units in case of a grounding. A large skeg
was placed at the stern to provide better course stability. Both are used as supports in docking. The double chine hull is built
with a frame spacing of 600mm and consists of six watertight compartments. The tug is driven by two Deutz-MWM diesel engines
type SBV 9 M 628 providing 2,754 brake horsepower (bhp) at 1,000rpm. The engines are coupled to the propulsion units via an
integrated slipping clutches and shafts to two Roll Royce Ulstein rudder propellers type US 305 FP with fixed pitch
propellers of 2.60m diameter. The Aquamasters are mounted in recesses in the hull to minimize the draught. The tug have a
maximum speed of 13kts and a bollard pull of 58t. Usually Aquamaster US 255 are used with an engine output of 2,754bhp.
Rolls Royce recommended to use the US 305 because the required ice class requested their greater stability. The US 305 has a
larger gear housing on the propeller shaft and allows less water flow und produces less thrust with the same propeller diameter.
BUGSIER 2's bollard pull tests produced 63t and 70t + under overload and proofed the US 305's ability to deliver a bollard pull of 65t.
So it seems that mainly the hull lines of BUGSIER 1 have to be blamed for not reaching the contractural bollard pull. BUGSIER 1
has a bunker capacity of 185 m3 (140t). She is classified by Germanischer Lloyd as "+ 100 A5 M E1 Tug" for
"restricted international service" (maximum 200nm from coast). The owners will use her mainly as a harbour tug as the
towing equipment indicates.
A hydraulically driven combined anchor and mooring winch is located on the foredeck.
It was provided by Rolls Royce Brattvaag and is of the type 1700/220H. The winch has two chain lifters and two warping heads.
The winch handles two 495kg "high holding power" "Pool" type anchors. The anchors are connected to 330m stud link chain of 22mm
diameter, which run through chain stoppers. Two guide rollers and bitts complete the foredeck equipment. Behind the winch the
deck house is located. It accommodates two single-berth cabins for master and chief engineer, two double-berth cabins for
the crew, sanitary spaces, galley, mess room, changing room and stores. All accommodation is air-conditioned. A Rolls Royce Brattvaag
towing winch type TW 1700/220H is fitted on the afterdeck/towing deck behind the deck house. The winch has a single split drum
and a single warping head. Both drums are equipped for harbour work. One drum carries 150m x 52mm steel wire, the other one 150m x 55mm
synthetic rope. The winch has a pulling power of 22t and 170t brake holding load. Additionally fitted is a Mampaey towing hook
with a safe working load (swl.) of 65t. Also fitted are a large towing fairlead, a guide roller and bitts.
It is the roof of the accommodation. The full hight battery as well as air-conditioning
and ventilation rooms are located at the aft end. On top is the wheelhouse. Two pilot ladders are located on either side.
A rigid inflatable boat with a 25hp outboard motor and its launching crane are fitted between the plant rooms and a breakwater.
The boat has a capacity of six persons. Two inflatable liferafts for six persons each are located behind the plant rooms on
either side of the deck.
It accommodates the wheelhouse. The control consoles are located along the foreward
bulkhead and parallel on both sides of the ship's center line. Most of the electronic equipment was supplied by Furuno. It
consists among other things of the following components: two radar systems, echo sounder, autopilot, gyro compass, Differential GPS (DGPS),
and speedlog. The safety equipment consists of the automatic distress alerting and locating Global Maritime Distress and Safety
System to Area 1 standard(GMDSS A1) including Navtex receiver (Navigational Information over Telex), SART (Search And Rescue Transponder),
and EPIRB (Emergency Position Indicating Radio Beacon). As communication systems GSM mobile phone (Global System for Mobile communications)
and two VHF DSC sets (DSC=Digital Selective Calling, part of GMDSS) are available.
The roof of the wheelhouse carries the mast, two searchlights with 1,000W each,
and the magnetic compass.
In harbour service BUGSIER 1 has a crew of three persons. Accomodation is for maximum six persons.