General: BUGSIER 2 und 3 are 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 tugs are driven by two Deutz-MWM diesel engines
type SBV 9 M 628 providing 2,788 brake horsepower (bhp) at 1,000rpm. The engines are coupled to the propulsion units via integrated
slipping clutches and shafts to two Rolls 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. BUGSIER 2 and BUGSIER 3 reached a maximum
speed of 12kts, a continous bollard pull of 63 metric tonnes (t), and a bollard pull of 67t at 110% engine output. The contractually
required 65t were missed again. Usually Aquamaster US 255 are used with an engine output of 2,788bhp. US305 had to be used instead
to fulfill the requirements of the classification society related to the required ice class. The US305 has a larger gear housing
on the propeller shaft and allows less water flow und produces less thrust with the same propeller diameter compared to the US255.
A larger propeller was not allowed because of the draught restictions given by the new owners. It can't be said that the US305 is
the reason for the lack of bollard pull. They proofed their abilities when delivering 67t with 110% engine output. The tank capacities
are: 185m3 fuel oil, 30m3 drinking water, 50m3 ballast water and 4m3 lube oil.
BUGSIER 2 and 3 are built to the rules of Germanischer Lloyd and classified as GL + 100A5 M E1 "Tug" GL + MC E1 AUT.
The arrangement of the main deck, the equipment, and accomodation show that the tugs were designed with sea towage in mind.
The Navigational lights are equipped in a way that the tugs can drive bow or stern first continually.
The forecastle got adapted to the deep-sea use of the tug by raising
the forecastle by approx. 1.50m compared to the remaining main deck. The raise starts approx. 1m behind the front edge of the
deckhouse. The forecastle carries an hydraulically driven combined anchor and mooring winch, delivered by the Dutch company Kraaijeveld
an has a pull of 10t. The winch has two chain lifters for 24mm diameter stud-link anchor chains, two mooring drums, and two
warping heads. The chains are 330m long and fitted to type Pool high-holding-power anchors. In front of the winch two pairs of guide rollers.
The hydraulically driven towing winch has two drums and is of the warerfall type. The winch
type KA-8-H-TR/TR was provided by Kraaijeveld too. The winch has a pulling power of 80t at 7m/min and a braking power of 180t.
The upper drum carries a steel wire of 800m length and 52mm diameter. The lower drum carries the habour towing gear with 150m
steel wire of 52mm diameter, stretcher, and steel wire pennant. A large towing fairlead is placed directly behind the towing
winch. At the starbord post the Mampaey towing hook with a safe working load (s.w.l.) of 65t is mounted. A second, much smaller
towing fairlead is located approx. 4m further aft. A door is fitted into the stern bulwark in the ship's center line to allow
for anchor handling work. Anchors can't be taken on board. To the starbord and port side of the door two hydraulically operated
towing pins are located. They are offset approx. 1.50m from the ship's center line. Oelkers & Eicher supplied these pins.
The deck is cladded with wood behind the towing winch.
Here the deckhouse is located. The floor has the same elevation as the afterdeck.
It houses from bow to stern on the port side: single-berth cabin of the chief, double-berth crew cabin, sanitary space, changing
room and store. On the starbord side there are single-berth officer's cabin, double-berth crew cabin, mess room, galley, and
CO2 room. The accommodation is completely air conditioned.
Below main deck:
there are six watertight compartments. From bow to stern these are fore peak with
water ballast tank, workshop and store, rudderpropeller room, engine room, rope store, and aft peak with ballast tank. The engine
room contains besides the main engines two 225kVA generator sets, the 30kVA harbour set, and the Kraaijeveld hydraulic unit. A
Kraaijeveld hydraulic storage winch is mounted in the rope store. It carries 800m steel wire of 52mm diameter and has a pulling
power of 4t at 20m/min.
It is the roof of the deckhouse and carries the single-berth cabin for the master, the
air conditioning and ventilation room, switch gear room, battery room, and the staircase to the wheelhouse which is located above.
The M.O.B.-/workboat is fitted in front of the superstructure, behind a breakwater. It has a 25hp outboard motor. A Palfinger
hydraulic crane is mounted at the starbord aft end of the deck. The crane is mounted on a column which carries the loads down
to the hull. The crane has a load moment of 13.3tm and a s.w.l. of 0.64t at 12 m reach. At the aft end two inflatable liferafts
for ten persons each are mounted in a craddle, one at each side.
here the wheelhouse is located. In the front and aft control consoles are located.
The navigational equipment consists of the following components: two radar systems, electronic chart system, echo sounder,
magnetic compass, satellite compass, autopilot, speedlog, and AIS (Automatic Identification System). The safety equipment
consists of the automatic distress alerting and locating GMDSS A2 system (Global Maritime Distress and Safety System to Area 2 standard)
including Navtex receiver (Navigational Information over Telex), SART (Search And Rescue Transponder), and EPIRB (Emergency Position Indicating Radio Beacon).
As communication systems Inmersat-C, Inmersat-F, two VHF DSC sets (DSC=Digital Selective Calling, part of GMDSS),
weatherchart recorder, and one MF/HF radiotelephone transceiver are available.
The wheelhouse roof carries the navigational mast, the magnetic compass, and two remote controlled searchlights with 1,000W each.
During harbour work BUGSIER 2 and 3 have a crew of three. With three single-berth and
two double-berth cabins there is room for seven persons while working offshore. Maximum crew is ten persons as each single-berth
cabin is equipped with an additional Pullman bed.