General: The four tugs are typical ASD-tugs with the rudder propellers beneath the stern.
The chine lines of the double-chine hull are carried forward into the stern. A bilge keel is fitted midships between the two
chine lines. The rudder propellers are mounted approx. 4.5m from the stern. They are tilted approx. 3° backwards to reduce the
angles of the universal joints and to enhance the efficiency of the propulsion units. The rudder propellers are Rolls Royce
Aquamaster type US 3001 with 2.60m dia. propellers in nozzles. The Aquamasters outstand about 1.00m beneath the hull. The approx.
19m long box keel begins about 6m behind the bow and is as deep as the propulsion units at its end. This way it offers kind of
protection for the propulsion units in case of grounding and enhances the directional stability. Two ABC type 8MDZC diesel
engines with 1,840kW (2,500bhp) each at 1,000rpm are driving the propulsion units through Twin Disc type MCD 3000 multiple disc
clutches and cardan shafts. The tugs have a speed of 12.5kts and bollard pulls of 65t. Bunker capacities are 167m3 MDO (diesel)
and 32m3 freshwater The two FiFi-1 standard equipped tugs can bunker just 159m3 and additionally 9m3 dispersant. VB FÉCAMP
and VB GASCOGNE have one monitor each, delivering 300m3/h. The fire fighting system on each FiFi-1 tug was provided by
Kvaerner. It comprises of two 1,200m3/h monitors, and step-up gears and fire fighting pumps coupled to the front end of the main
engines. All tugs are equipped with deluge systems. The tugs are equipped with Schottel SST 110 LK bow thrusters of 200kW with 79cm
Tank Top Deck:
Beginning at the bow VB GASCOGNE has the following five compartments: forepeak with
accommodations and stores above of fuel oil and freshwater tanks, engine room, workshop and store, rudder propeller room, and aft
peak. On the remaining tugs the accommodations are replaced by stores. Additionally to the main engines there is the following
equipment mounted: fire fighting pumps mounted to the front end of the main engines, two 1.400m3/h pumps on the FiFi-1 tugs, a
smaller one on the port engines on the remaining tugs, two generator sets in line between the main engines delivering a total of
168kW, and the starting air system.
It is approx. 2.8m above the tank top deck on top of fuel oil and freshwater tanks. The
deck begins approx. 5m from the bow and is approx. 7m long. It is located beneath the raised forecastle. On VB GASCOGNE
there are two three-berth cabins, a separate sanitary room and stores. The remaining tugs have stores for among others fire fighting
materials instead of the living quarters. At the end of the deck behind a watertight bulkhead inside the engine room the engine
control room is located, overlooking the engine room lying below.
Aft deck: the hydraulically operated aft towing winch is fitted behind the superstructure
and a large hatch accessing the engine room. On VB GASCOGNE it is a reversed waterfall winch with two drums which was provided
by AMGC, a French company. The aft, upper drum carries 400m x 50mm steel wire, spring and pennant. The forward, lower drum carries
600m x 50mm steel wire. The drums have a pulling power of 7t and a brake force of 135t. The remaining tugs have a single drum
winch from the same manufacturer with 400m x 50mm steel wire. The forces are the same. Only the VB GASCOGNE carries a MOB boat.
It lies on a rack mounted on the side frames of the winch. A horseshoe-shaped towing fairlead is fitted directly behind the winches.
An AMGC tugger winch with a warping head is mounted on just VB GASCOGNE at the port side of the towing fairlead. In front
of the tugger winch a Mampaey towing hook type DCX 50/65 is fitted to a bracket. The tugs have a clear deck behind the towing fairlead.
Forecastle: About midships a 1.00m high ramp leads to the raised forecastle which has a sheer of one meter toward the bow.
A hydraulically operated combined anchor and towing winch is mounted in front of the superstructure. It was provided by AMGC and
has two drums, two chain lifters and two warping heads. When delivered the port drum carried a synthetic Steel Lite rope of 100m
length and the starboard drum 300m x 52mm steel wire. The brake power is 135t. A double towing fairlead is fitted in front of the winch.
Superstructure: Two single-berth cabins with en-suite sanitary facilities are located at the forward bulkhead on forecastle
level. Adjacent to the aft are galley and mess. The stairway and a changing room are separated from the forward part by a crossway.
They are framed on both sides by funnels and ventilation shafts. Behind the shafts you find a CO2 store at port and a store at starboard.
Here are three single-berth cabins with en-suite sanitary facility for captain,
chief, and boatswain arranged. An inflatable life raft is mounted on each side of the deck at the railing. VB GASCOGNE has
two boat cranes with a safe working load of 850kg each, one in each corner at the aft of the deck.
There is an alleyway around the wheelhouse. Steps lead to the wheelhouse which is raised
approx. 1.10m. The space in-between is used for air-conditioning equipment and switchgear of the bridge electronics. The two
main control panels are fitted eccentrically. The forward one is at starboard, the aft one at port. Each consists of two consoles.
The forward panel has a tracked captainís chair between the consoles. At port you find a chart table and a seating. The equipment
is according to GMDSS Area 1 standard and contains among others Sailor VHF radios, Atlas colour radar, and Navitron autopilot.
The deck carries the magnet compass, two search lights, the mast with radar, navigation
lights and antennas, and fire fighting monitors. VB SAINTE ADRESSE and VB FÉCAMP have two monitors, the remaining tugs one.