Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
just remarkable !
so much detail--and razor sharp-- ad in your giant scale
it will print crisply
JB
just remarkable !
so much detail--and razor sharp-- ad in your giant scale
it will print crisply
:thumbs_up_1: JB
Posted: Sat Dec 21, 2024 9:18 am
Iceman 29
Post subject:
Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
Hull gutting yesterday. This operation was usually rather time-consuming, as it involved virtually remaking a smaller shell within the hull, generally keeping a thickness of 1.5 mm, and assembling it to the other using a negative assembly.
Fusion 360's “Shell” function has improved considerably in recent weeks, and all the better for it. This function used to work only once in 5 times, depending on the complexity of the part.
As you can see from these screenshots, the program has perfectly managed the internal shape of the bow thruster tunnels, which are quite complex and almost impossible to do as well manually.
Today:
Windlass/capstan design completed.
Just to give you the scale of the ship.
Hull gutting yesterday. This operation was usually rather time-consuming, as it involved virtually remaking a smaller shell within the hull, generally keeping a thickness of 1.5 mm, and assembling it to the other using a negative assembly.
Fusion 360's “Shell” function has improved considerably in recent weeks, and all the better for it. This function used to work only once in 5 times, depending on the complexity of the part.
As you can see from these screenshots, the program has perfectly managed the internal shape of the bow thruster tunnels, which are quite complex and almost impossible to do as well manually.
Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
Not too many visual advances today, port aft hatch, active rudder propellers or azipods, but mainly a flattening out of what has already been drawn for the aft section.
I've scaled all these accessories to the correct proportion, and changed the size of the nozzles too, which were a bit too small, so the plan isn't right.
Changed the pods too, especially the diameter of the drive. Not easy to do.
I'm quite happy with the 2 ‘sabre’ type propellers, a first for me, I know how to do it now. All I had to go on were the photos. No plan.
Not too many visual advances today, port aft hatch, active rudder propellers or azipods, but mainly a flattening out of what has already been drawn for the aft section.
I've scaled all these accessories to the correct proportion, and changed the size of the nozzles too, which were a bit too small, so the plan isn't right.
Changed the pods too, especially the diameter of the drive. Not easy to do.
I'm quite happy with the 2 ‘sabre’ type propellers, a first for me, I know how to do it now. All I had to go on were the photos. No plan.
Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
Tks Jim!
Indeed about pictures.
I do have a lot of them, but I can't show them all because some are private, and the same goes for some of the drawings.
Drawing of the transom accessories. The divers' ladder, the platform for boarding and disembarking in the sea, for the inflatable or others. Various fixing points.
Tks Jim!
Indeed about pictures. :big_grin:
I do have a lot of them, but I can't show them all because some are private, and the same goes for some of the drawings.
Drawing of the transom accessories. The divers' ladder, the platform for boarding and disembarking in the sea, for the inflatable or others. Various fixing points.
Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
WoW--quite the project !-- even in 1/144 a decent lump of model I am guessing that a ' modern ship will be more straightforward to research in part thanks to extensive photographs- even compared to a 20 C ship like your ' 15 Bretagne?
I am watching with interest!
JIM B
WoW--quite the project !-- even in 1/144 a decent lump of model I am guessing that a ' modern ship will be more straightforward to research in part thanks to extensive photographs- even compared to a 20 C ship like your ' 15 Bretagne?
I am watching with interest!
JIM B :wave_1:
Posted: Tue Dec 17, 2024 3:46 pm
Iceman 29
Post subject:
Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
Drawing of the 2m50-diameter propeller for the main propulsion system.
The Andromeda minehunter fitted with a 3D-printed propeller: By Vincent Groizeleau - 01/14/2021
For the first time, a French Navy ship is equipped with an additive manufacturing propeller. The ship in question is the tripartite mine hunter (CMT) Andromède, which received this equipment during its major technical shutdown in Brest.
The 2.5-meter-diameter propeller, comprising five cuproaluminum blades, was produced by Naval Group's Indret site, which has been investing heavily in the industrialization of new 3D printing technologies for several years.
The site, located in the Nantes region, has equipped itself with the largest cell in Europe employing the WAAM (Wire Arc Additive Manufacturing) process, which consists of creating objects by successively adding layers of material. 20 meters long and 8 meters wide, this robotized cell, integrated by the Nantes-based subsidiary of the Japanese group Yaskawa, can produce parts weighing up to 5 tons.
In this case, each blade blank, made from the same alloy as in the foundry, weighed 300 kilos at the end of additive manufacturing, and 200 after machining. Leaving Indret in October, the five blades made their way to Brest, where local Naval Group teams attached them to the propeller shaft, which was then installed on the CMT (the single propeller constituting the Andromeda's main propulsion system). According to the manufacturer and the navy, tests carried out in December demonstrated the success of the operation. Certified by Bureau Veritas, this propeller was not produced for a test campaign, but is intended to remain on the ship until the end of its life.
“In collaboration with the Fleet Support Service and the French Armaments Procurement Agency (Direction Générale de l'Armement), we had to create the entire reference system to meet the very high standards required of military vessels, for example in terms of robustness and acoustic discretion. This propeller will remain on the ship for all its missions, and has no restrictions compared with the one it replaces”, explains Naval Group, where it is claimed that this is the largest propeller produced in this way in Europe, and the first to be installed on a combat vessel......
I started from these photos, including the one that's almost full-frontal.
I've thickened the blades for printing.
Drawing of the 2m50-diameter propeller for the main propulsion system.
[i]The Andromeda minehunter fitted with a 3D-printed propeller: By Vincent Groizeleau - 01/14/2021
For the first time, a French Navy ship is equipped with an additive manufacturing propeller. The ship in question is the tripartite mine hunter (CMT) Andromède, which received this equipment during its major technical shutdown in Brest.
The 2.5-meter-diameter propeller, comprising five cuproaluminum blades, was produced by Naval Group's Indret site, which has been investing heavily in the industrialization of new 3D printing technologies for several years.
The site, located in the Nantes region, has equipped itself with the largest cell in Europe employing the WAAM (Wire Arc Additive Manufacturing) process, which consists of creating objects by successively adding layers of material. 20 meters long and 8 meters wide, this robotized cell, integrated by the Nantes-based subsidiary of the Japanese group Yaskawa, can produce parts weighing up to 5 tons.
In this case, each blade blank, made from the same alloy as in the foundry, weighed 300 kilos at the end of additive manufacturing, and 200 after machining. Leaving Indret in October, the five blades made their way to Brest, where local Naval Group teams attached them to the propeller shaft, which was then installed on the CMT (the single propeller constituting the Andromeda's main propulsion system). According to the manufacturer and the navy, tests carried out in December demonstrated the success of the operation. Certified by Bureau Veritas, this propeller was not produced for a test campaign, but is intended to remain on the ship until the end of its life.
“In collaboration with the Fleet Support Service and the French Armaments Procurement Agency (Direction Générale de l'Armement), we had to create the entire reference system to meet the very high standards required of military vessels, for example in terms of robustness and acoustic discretion. This propeller will remain on the ship for all its missions, and has no restrictions compared with the one it replaces”, explains Naval Group, where it is claimed that this is the largest propeller produced in this way in Europe, and the first to be installed on a combat vessel...... [/i]
Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
Drawing of the bow thruster angular gearboxes and propellers. Drawing of the various outlets and inlets, I still have some to add, especially on the port side.
Drawing of the Doppler lock, the appendage on the starboard bow, and the echo sounder, which is a little on the starboard stern.
Drawing of the port low water intake.
Drawing of the bow thruster angular gearboxes and propellers. Drawing of the various outlets and inlets, I still have some to add, especially on the port side.
Drawing of the Doppler lock, the appendage on the starboard bow, and the echo sounder, which is a little on the starboard stern.
Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
CONSTRUCTION
The minesweepers of the 1950s were naturally to be replaced by minehunters. French, Belgian and Dutch contacts on the subject began in 1973, culminating in December 1974 in the signature of a joint military program by the chiefs of staff. A definitive draft of the cooperation agreement was acquired in January 1975, and the first ministerial signature took place on April 28. The cooperation agreement, signed in May 1975, covers the development, construction and logistical support of a new type of mine hunter, soon to be known as a tripartite. France, with the DTCN (Direction Technique des Constructions Navales), is in charge of the program, and is to build the prototype.
A workshop to process the glass-resin composite was set up in Lorient, in aisles 1 to 3 of block K 1 of the Kéroman submarine base built by the Germans in 1941 (1). All the ships were built from the same set of plans, and the equipment and components were identical, with the exception of a few “shipyard” items traditionally supplied by the shipyard. The distribution of supplies is shared between the three countries, and balanced in value in proportion to needs. Each country builds its own ships. Design and development costs are shared in thirds, but each country retains its own costs for the acquisition of equipment and vessels. As in all cases of multinational cooperation, the organizational chart is relatively complex. (See table opposite) France is responsible for the weapon system. It supplies the sonar, the autopilot, the mine-hunting calculation and visualization system, the mine identification and destruction equipment, the roll stabilization system and the gas turbines for power generation.
Belgian CMT construction. (Flor Van Otterdyk) Photos 01 to 09: The hull and superstructure are molded at Polyship in Ostend. The hull is then towed to the Rupelmonde shipyard on the Scheldt, where the equipment is installed in a hangar. The ship is then taken out of the hangar, christened and launched. The CMTs were the last ships built by Polyship and the Mercantile marine group's Rupelmonde shipyard.
Belgium supplies electrical equipment and alternators, and tables, the mine-hunting propulsion system and the steering gear. The Netherlands supplied the main propulsion system, from the diesel to the propeller, as well as the command and control equipment, air conditioning and hydraulic crane. In 1977, to perfect the manufacturing technique, Lorient produced a full-scale hull section some 15 meters long, representing the middle third of the vessel. This piece was then tested in the water (November 18, 1977), before being used to validate the structure's resistance to shock and vibration, then to test full-scale shocks and check the acoustic discretion of the propulsion system components.
On December 20, 1977, the first ship was put into its slipway. In reality, molders lay the first layers of glass fabric in a steel mold. The mold is fifty meters long, and is topped by a scaffold so that work can be done on the lower surface without having to lean against it. Successive layers of glass-fibre fabric, previously impregnated with polyester resin, are laid one on top of the other. The hull ribs are also made of CVR and are integrated into the hull by contact.
The completed hull, weighing almost 200 t, was de-molded less than a year later and, via the submarine base slip, launched and towed to the main dockyard. She was refitted in the Lanester form and fitted with all her internal equipment. The sophistication of these ships, with their high level of electronics, makes them one of the most expensive combat ships per kilo in France. Each CMT requires around 500,000 hours of work, and in 1990 cost the equivalent of 100 million euros. France planned to order fifteen ships up to 1985, and thirteen fighters were included in the 1977-1982 program. This number was finally reduced to ten around 1985. In the end, forty CMTs were built, ten fighters for France, fifteen for the Netherlands, ten for Belgium, two for Indonesia and three for Pakistan.
The main diesel Engine is a Werkspoor and the generator a Volvo.
As with their composite hulls, CMTs have been fitted with a very specific propulsion system to meet the requirements of mine-hunting missions. For transit phases, they rely on a main propulsion system based on a 1900 hp Werkspoor ARUB 215 diesel engine and a single shaft line ending in a controllable-pitch propeller. Maximum speed is 13 knots, with fuel reserves to cover 1800 nautical miles at 11 knots. In addition to the main engine, the engine compartment is equipped with a Volvo generator, which replaced the original DAF engine in 2020."
Main engine:
Diesel generator:
3 Gas turbine generator for azipod and general electric purpose:
"During hunting periods, the vessels switch to a specific propulsion mode. The main propeller is disengaged and two active ACEC rudders, each combining a rudder and a propeller (90 kW), come into action. In this configuration, the energy needed for propulsion, as well as powering all the onboard systems, comes not from the main engine in the bottom, but from three Rolls-Royce gas turbines, which have replaced the Astazou engines with which the CMTs were initially equipped (turbines initially developed by Turbomeca for helicopters, such as the Gazelle).
These three turbines are not housed in the engine compartment, but in a space integrated into the superstructure, as far as possible from the waterline. The aim is to be as silent as possible to avoid activating the acoustic trigger mines. ‘The choice of placing the turbines in the tops was linked to the desire to reduce vibrations as much as possible, and therefore the noise radiated into the water, which is essential when hunting for mines. One of these turbines is enough to power the propulsion with the active rudders and a second for on-board power, with the third in reserve,’ explains the captain of the Céphée. The turbines are also mounted on elastic blocks to absorb vibrations and cushion the impact in the event of an underwater explosion. "
I worked on the specific stainless steel mooring bollards, the windlass chain guides (not finished), and a big job that took me quite a long time, the tunnels for the 2 bow thrusters, which are very specific to this type of vessel. You can see that they follow a slope and end on one side with a hydrodynamic bulge.
What's more, the beads are naturally asymmetrical port/starboard...
There are still the propellers to draw, but that's easy enough, thanks to the photos below.
I've found some very good photos here of a Belgian fighter in the final stages of construction, the kind of photos you'd expect from a modeller.
The minesweepers of the 1950s were naturally to be replaced by minehunters. French, Belgian and Dutch contacts on the subject began in 1973, culminating in December 1974 in the signature of a joint military program by the chiefs of staff. A definitive draft of the cooperation agreement was acquired in January 1975, and the first ministerial signature took place on April 28. The cooperation agreement, signed in May 1975, covers the development, construction and logistical support of a new type of mine hunter, soon to be known as a tripartite. France, with the DTCN (Direction Technique des Constructions Navales), is in charge of the program, and is to build the prototype.
A workshop to process the glass-resin composite was set up in Lorient, in aisles 1 to 3 of block K 1 of the Kéroman submarine base built by the Germans in 1941 (1). All the ships were built from the same set of plans, and the equipment and components were identical, with the exception of a few “shipyard” items traditionally supplied by the shipyard. The distribution of supplies is shared between the three countries, and balanced in value in proportion to needs. Each country builds its own ships. Design and development costs are shared in thirds, but each country retains its own costs for the acquisition of equipment and vessels. As in all cases of multinational cooperation, the organizational chart is relatively complex. (See table opposite) France is responsible for the weapon system. It supplies the sonar, the autopilot, the mine-hunting calculation and visualization system, the mine identification and destruction equipment, the roll stabilization system and the gas turbines for power generation.
Belgian CMT construction. (Flor Van Otterdyk) Photos 01 to 09: The hull and superstructure are molded at Polyship in Ostend. The hull is then towed to the Rupelmonde shipyard on the Scheldt, where the equipment is installed in a hangar. The ship is then taken out of the hangar, christened and launched. The CMTs were the last ships built by Polyship and the Mercantile marine group's Rupelmonde shipyard. [url=https://postimg.cc/N5NDhhS1][img]https://i.postimg.cc/x1Q4znPF/Capture-d-e-cran-2024-12-14-a-12-08-47.jpg[/img][/url]
Belgium supplies electrical equipment and alternators, and tables, the mine-hunting propulsion system and the steering gear. The Netherlands supplied the main propulsion system, from the diesel to the propeller, as well as the command and control equipment, air conditioning and hydraulic crane. In 1977, to perfect the manufacturing technique, Lorient produced a full-scale hull section some 15 meters long, representing the middle third of the vessel. This piece was then tested in the water (November 18, 1977), before being used to validate the structure's resistance to shock and vibration, then to test full-scale shocks and check the acoustic discretion of the propulsion system components.
On December 20, 1977, the first ship was put into its slipway. In reality, molders lay the first layers of glass fabric in a steel mold. The mold is fifty meters long, and is topped by a scaffold so that work can be done on the lower surface without having to lean against it. Successive layers of glass-fibre fabric, previously impregnated with polyester resin, are laid one on top of the other. The hull ribs are also made of CVR and are integrated into the hull by contact.
The completed hull, weighing almost 200 t, was de-molded less than a year later and, via the submarine base slip, launched and towed to the main dockyard. She was refitted in the Lanester form and fitted with all her internal equipment. The sophistication of these ships, with their high level of electronics, makes them one of the most expensive combat ships per kilo in France. Each CMT requires around 500,000 hours of work, and in 1990 cost the equivalent of 100 million euros. France planned to order fifteen ships up to 1985, and thirteen fighters were included in the 1977-1982 program. This number was finally reduced to ten around 1985. In the end, forty CMTs were built, ten fighters for France, fifteen for the Netherlands, ten for Belgium, two for Indonesia and three for Pakistan.
As with their composite hulls, CMTs have been fitted with a very specific propulsion system to meet the requirements of mine-hunting missions. For transit phases, they rely on a main propulsion system based on a 1900 hp Werkspoor ARUB 215 diesel engine and a single shaft line ending in a controllable-pitch propeller. Maximum speed is 13 knots, with fuel reserves to cover 1800 nautical miles at 11 knots. In addition to the main engine, the engine compartment is equipped with a Volvo generator, which replaced the original DAF engine in 2020."
3 Gas turbine generator for azipod and general electric purpose:
"During hunting periods, the vessels switch to a specific propulsion mode. The main propeller is disengaged and two active ACEC rudders, each combining a rudder and a propeller (90 kW), come into action. In this configuration, the energy needed for propulsion, as well as powering all the onboard systems, comes not from the main engine in the bottom, but from three Rolls-Royce gas turbines, which have replaced the Astazou engines with which the CMTs were initially equipped (turbines initially developed by Turbomeca for helicopters, such as the Gazelle).
These three turbines are not housed in the engine compartment, but in a space integrated into the superstructure, as far as possible from the waterline. The aim is to be as silent as possible to avoid activating the acoustic trigger mines. ‘The choice of placing the turbines in the tops was linked to the desire to reduce vibrations as much as possible, and therefore the noise radiated into the water, which is essential when hunting for mines. One of these turbines is enough to power the propulsion with the active rudders and a second for on-board power, with the third in reserve,’ explains the captain of the Céphée. The turbines are also mounted on elastic blocks to absorb vibrations and cushion the impact in the event of an underwater explosion. "
I worked on the specific stainless steel mooring bollards, the windlass chain guides (not finished), and a big job that took me quite a long time, the tunnels for the 2 bow thrusters, which are very specific to this type of vessel. You can see that they follow a slope and end on one side with a hydrodynamic bulge.
What's more, the beads are naturally asymmetrical port/starboard...
There are still the propellers to draw, but that's easy enough, thanks to the photos below.
I've found some very good photos here of a Belgian fighter in the final stages of construction, the kind of photos you'd expect from a modeller.
Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
I am guessing that most of the hull is aluminum so it is non-magnetic. Minesweepers must not have a magnetic signature so they don't detonate magnetic mines. That means virtually everything must be non magnetic materials.
What type of engines does the vessel have? My minesweeper had non-magnetic diesels.
Phil
I am guessing that most of the hull is aluminum so it is non-magnetic. Minesweepers must not have a magnetic signature so they don't detonate magnetic mines. That means virtually everything must be non magnetic materials.
What type of engines does the vessel have? My minesweeper had non-magnetic diesels.
Phil
Posted: Thu Dec 12, 2024 12:52 am
Iceman 29
Post subject:
Re: M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
Drawing of the front central fairlead, you can open that one.
Drawing of the stainless steel fairleads with rollers, non-magnetic ship obliges, as well as the stainless steel protection plates of the composite deck to prevent that the anchor chains do not scrape it.
I've seen that on some hunters the anchor chain is made of stainless steel. All in all, the construction cost must be quite high for the size of the boat, it's quite a technical vessel.
There are only 5 portholes on the starboard side of the hull.
8 hours to draw this windlass/cabstan, a rather original piece of equipment , I've never seen one designed like this, although I've seen a few go by during my career.
No plans of course, I used these two photos almost exclusively... It took a lot of imagination to make it credible.
And that's not the end of it, I've got the V-shaped chain slides to draw as well as the descent to the chain well, but that won't be as tricky.
I'm quite happy with the result, but note that the photo taken from the back was taken with a fisheye lens, hence the significant distortion of the image.
:copyright:Torsten Bätge HNLMS Schiedam M860, note the stainless steel chain. luxury, but it avoids magnetic effects and rust.
Drawing of the stainless steel fairleads with rollers, non-magnetic ship obliges, as well as the stainless steel protection plates of the composite deck to prevent that the anchor chains do not scrape it.
I've seen that on some hunters the anchor chain is made of stainless steel. All in all, the construction cost must be quite high for the size of the boat, it's quite a technical vessel.
There are only 5 portholes on the starboard side of the hull.
8 hours to draw this windlass/cabstan, a rather original piece of equipment :heh: , I've never seen one designed like this, although I've seen a few go by during my career.
No plans of course, I used these two photos almost exclusively... It took a lot of imagination to make it credible.
And that's not the end of it, I've got the V-shaped chain slides to draw as well as the descent to the chain well, but that won't be as tricky.
I'm quite happy with the result, but note that the photo taken from the back was taken with a fisheye lens, hence the significant distortion of the image.
:copyright:Torsten Bätge HNLMS Schiedam M860, note the stainless steel chain. luxury, but it avoids magnetic effects and rust. [url=https://postimg.cc/bG4BxzPv][img]https://i.postimg.cc/B6vfG6w2/HNLMS-Schiedam-M860-3873.jpg[/img][/url]
Chasseur de Mines Croix du Sud, nice pictures in Saint-Malo here: https://www.emeraude-journal-infos.fr/2012/09/saint-malo-escale-du-chasseur-de-mines-croix-du-sud/
Emeraude Journal Infos - Photos Patrick Desjardins :copyright: [url=https://postimg.cc/YLN2cnR1][img]https://i.postimg.cc/VvpJC2bH/CS-11.jpg[/img][/url]
The result: the ‘thing’ should look like this, with a few details still missing, the sprocket brake handwheels and the grease nipples.
M643 Andromède-Tripartite Minehunter 3D - 1/100 & 1/144
New project carried out with the participation of Lionel Codus at his request. Lionel provides me with his extensive documentation and knowledge based on his contacts with those who have sailed on this type of vessel.
Lionel Codus took part in the “Titanic monograph” by the late Gérard Piouffre, with Cyril Codus and Christophe Martinez.
The Tripartite type, or in France the Eridan class, is a series of 35 minehunters designed according to a joint project by the Belgian, French and Dutch navies, ratified by the Chiefs of Staff of the three navies on December 9, 1974.
The Andromède, hull number M643, is a French Navy Tripartite-class minehunter. Its home town is Issy-les-Moulineaux.
Its missions are to “detect, locate, classify, identify, destroy or neutralize mines in water depths ranging from 10 to 200 meters, guide convoys under threat of mines, penetrate the sea and search for wrecks”.
M643 Andromeda:
Type Tripartite minehunter Eridan class
History Served in the French Navy Sponsor France, Belgium and Netherlands Shipyard Lorient Arsenal Launched October 19, 1984 Status In service
Crew Crew 5 officers, 32 petty officers, 12 petty officers and sailors Technical specifications Length 51.50 m Main beam 8.90 m Draught 3.80 m Air draft 21.50 meters Displacement 615 tons fully loaded
Propulsion Werkspoor-Wärtsilä ARUB 215 V 12 diesel engine Power 1,900 hp Speed 15 knots on main drive, 7 knots on auxiliary drive
Military features Armament 1 AA 20 mm F2 machine gun, 2 12.7 mm machine guns, 2 7.62 mm machine guns, PAP-104 Range 3,000 nautical miles at 12 knots
Career French flag Home port Brest naval base Call sign M643
I started the drawing a week ago, having put the Shell Welder on hold for a few days due to the death of my mother-in-law at the end of November to avoid embalming the house with paint smells, so this project came just at the right moment to keep my mind occupied.
The hull of the ship is quite simple. I'm drawing at 1/144, but a 1/100 version, my preferred scale for this size of ship (51 cm long at 1/100), will also be printed for me.
New project carried out with the participation of Lionel Codus at his request. Lionel provides me with his extensive documentation and knowledge based on his contacts with those who have sailed on this type of vessel.
Lionel Codus took part in the “Titanic monograph” by the late Gérard Piouffre, with Cyril Codus and Christophe Martinez.
:copyright: Gedour Ar Minou - Shipspotter / Michel Floch. https://www.flickr.com/photos/gedourarminou/ [url=https://postimg.cc/gr8m8fpN][img]https://i.postimg.cc/T2H1M64M/49950793343-7bc17ee13c-k.jpg[/img][/url]
The Tripartite type, or in France the Eridan class, is a series of 35 minehunters designed according to a joint project by the Belgian, French and Dutch navies, ratified by the Chiefs of Staff of the three navies on December 9, 1974.
The Andromède, hull number M643, is a French Navy Tripartite-class minehunter. Its home town is Issy-les-Moulineaux.
Its missions are to “detect, locate, classify, identify, destroy or neutralize mines in water depths ranging from 10 to 200 meters, guide convoys under threat of mines, penetrate the sea and search for wrecks”.
History Served in the French Navy Sponsor France, Belgium and Netherlands Shipyard Lorient Arsenal Launched October 19, 1984 Status In service
Crew Crew 5 officers, 32 petty officers, 12 petty officers and sailors Technical specifications Length 51.50 m Main beam 8.90 m Draught 3.80 m Air draft 21.50 meters Displacement 615 tons fully loaded
Propulsion Werkspoor-Wärtsilä ARUB 215 V 12 diesel engine Power 1,900 hp Speed 15 knots on main drive, 7 knots on auxiliary drive
Military features Armament 1 AA 20 mm F2 machine gun, 2 12.7 mm machine guns, 2 7.62 mm machine guns, PAP-104 Range 3,000 nautical miles at 12 knots
Career French flag Home port Brest naval base Call sign M643
[youtube]ZqEZY19U5LA[/youtube]
I started the drawing a week ago, having put the Shell Welder on hold for a few days due to the death of my mother-in-law at the end of November to avoid embalming the house with paint smells, so this project came just at the right moment to keep my mind occupied.
The hull of the ship is quite simple. I'm drawing at 1/144, but a 1/100 version, my preferred scale for this size of ship (51 cm long at 1/100), will also be printed for me.
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, I've never seen one designed like this, although I've seen a few go by during my career. 
I'll rectify that tomorrow... :') 
