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  SIENO Class Close Escort 
   
   
  MEGA TRAVELLER
  Science -Fiction Adventure 
  in the Far Future 
  CG softs:  Shade8.5， Poser6J & Vue9
   
  
   
   
   
   
  
   
   
  Outline of SIENO Class Close Escort 
   
  SIENO Class close escort is a small fighting ship used for various multi-
  purpose missions. This class is among the smallest armed interstellar 
  warships. The original model of this class is a 300dt class close escort with 
  drop tanks. 
  300dt class close escort, represented by GAZELLE class, was used widely in 
  the Third Imperium. The armor and structure of L-Hyd droppable tanks were 
  too thin or weak respectively, however, often performing badly in combat. 
  Consequently, the pressure to adopt a 400dt design for a close escort quickly 
  mounted. 
  Removing the drop tanks from the design could shortened production time 
  and simplified operations; the dual control system required by a changing hull 
  displacement (including grav plates, maneuver drive, and jump drives) was 
  relatively more complex than that of a single displacement ship. 
   
  The paramount factor, however, is the safety problems with drop tanks. The 
  reliability of the drop tank system was also much debated. The Imperial Navy 
  adopted regulations requiring replacement of drop tanks after 50 uses.
  
   
   
  In the FFW, the close escort carried out courier, scout, patrol, escort convoy 
  and sundry duties, suffering a great deal of damage. In the battlefield sectors 
  a number of close escorts were destroyed or suffered shattered tanks, 
  including ships from system (colonial) navies. 
   
  Since close escort is a key aspect of interstellar security, after the FFW 
  redesign and rebuilding started immediately. SIENO class is one of these 
  redesigns. LSP-affiliated MASA LIC has acknowledged it has accepted 
  numerous orders from the Imperial, sub-sector and system Fleets. They have 
  strongly supported the MASA's design of simplicity, reliability and balance of 
  offensive and defensive systems. 
   
  The design concept of this ship is as follows. 
  1. Removal of L-Hyd droppable tanks 
  2. Level up of FCS computers 
  3. Armored hull 
   
  650 of this class are in commission throughout the Spinward March Sector. 
   
   
   
  
   
   
   
   
  
   
   
   
   
   
  
   
   
   
  MASA/MASA04's CE-400-class Mk-1120 from MASA.Ship's 
   
   
   
  CraftID:  CE-4020201, Type CLOSE ESCORT, TL 15, MCr 546 
  Hull: 
    360/900, Disp= 400, Config= 1SL, Armor= 58G 
   
    Unloaded= 6282 tons, Loaded= 6675 tons 
  Power:   57/113, Fusion= 10170 MW, Duration= 1/3 
   
      No Wpns, Scrns, Agility; M-3 = 2747 MW, Duration= 6/18 
   
      No Wpns, Scrns, Agility; M-2 = 2000 MW, Duration= 20/60 
   
      LifeSupport & Controls; M-0 =  500 MW, Duration= 60/180 
  Loco:   43/86, Maneuver= 3 
   
    27/54, Jump= 4 
   
    NOE= 190, Cruise= 750, Top= 1000, Vacuum= 2850 
   
    Agility= 3 
  Commo: Radio= System x3, Laser= System x3, Maser= System x3 
  Sensors: EMMask, PasEMS= Interstellar x1, ActEMS= Far Orbit x1 
   
    Densitometer= LowPen/250m x1, HighPen/1km x1 
   
    Neutrino= min 10kw x1, EMSjammer= Far Orbit x1 
   
      ActObjScan= Rout,  ActObjPin= Rout 
   
      PasObjScan= Rout,  PasObjPin= Rout 
   
      PasEngScan= Simp,  PasEngPin= Rout 
  Off: 
    PartAcc= xx 2 
   
      Batt            2   
   
      Bear           2    
   
    BLaser= xx4 
   
      Batt          2    
   
      Bear         2    
  Def: 
    DefDM= +13 
   
    ArmorDM= -6, SizeCd= 4 
  Control: Computer= Model/9fib x3, Panels= HoloLink x25 
   
    Special: HUpHoloDisp x2 
   
    BasEnv, Bas LS, Ext LS, Grav plates, Inertial comp 
  Accom:  Crew= 14 (1 x 14), Staterooms= 8 
   
    Bridge= 2, Engrng= 1, Mtce= 0, Gunnery= 1, Flight= 3 
   
    Troops= 5, Command= 2, Stewards= 0, Frozen= 0, Medical= 0 
   
    HiPass= 0, MidPass= 0, LowPass= 0, LowBerth= 0, EmerLow= 2 
  SubCraft:20dt Gig x1 
  Other:   Fuel= 2510 kliters,  Cargo= 217 kliters 
   
    Fuel scoops, PurificationPlant (48hours) 
   
    ObjSize= Average, EMLevel= Faint 
  Design Notes  
   
    Mcr 437 in quantit 
   
   
  
   
   
  Detail of SIENO Class Close Escort 
  Hull 
  The hull shape and structure has not changed except for the combining the 
  internal fuel tanks with that tankage previously in the drop tanks. The hull is a 
  streamlined needle/wedge configuration with 2 maneuver drive pods. Hull 
  armor has been strengthened greatly, in light of the lessons of FFW combat. 
  If navies commit this ship into large scale fleet actions, it is able to play a role 
  in the fleet fighter squadrons. The streamlined configuration allows refueling 
  by skimming gas giants.   
  Power& Locomotion 
  This ship uses 4 2,400Mw and 1 570Mw fusion power plants; 4 Mk-100 
  double impulse maneuver drives, and 4 Mk-200 jump drives, generally. 
  Individual yards may substitute equivalent models of the equipment, however, 
  depending on contract specifications; models headed to sub-sector or system 
  navies may use converted commercial base drives, while Imperial Navy ships 
  will tend to use the exact type of drives based on more stringent contracting 
  standards. Acceleration 3G and FTL jump 4 is sufficient for the missions of 
  this ship, making it possible to operate with all of the main Imperial numbered 
  fleets.  
   
   
  
   
   
  This ship does not have sufficient fuel for longer tanks, so is not ideal for 
  long-term interstellar missions without refueling. This is a common issue of 
  small escorts, however, and is not really seen as a problem. This ship is able 
  to jettison either port or starboard drive pods in an emergency. 
   
   
  
   
   
  Communication 
  This ship is equipped with 3 RS-15A radio communication systems, 3 LS-15A 
  laser communication systems, and 3 MRS-15A maser communication 
  systems; it is therefore able to manage communications and information 
  under diverse tactical conditions. 
  Sensor 
  This ship mounts EMMask, a PEMSF-IS/8 passive EMS (Interstellar), an 
  AEMSF-FO/7 active EMS (Far Orbit), a DSF-Lw25 densitometer (250m), a 
  DSF-Hi1000 densitometer (1000m), an NSF-10 neutrionmeter (10km), and an 
  EMSJF-FO/4 EMS jammer (far orbit). These systems are the newest and 
  most capable models manufactured by of the LSP-affiliated ANSON, which 
  are also capable of operating under the I/O code F6980 of Imperial Navy 
  tactical data link system. Many military ships have already been equipped 
  with these communication systems. 
   
   
  
   
   
  Weapon 
  This ship equips 2 of particle accelerator barbettes and 2 high power triple 
  laser turrets on 4 weapon hard points. However, there is a variant model of 
  replacing particle accelerator barbettes with triple missile turrets. These 
  weapons are overkill against common enforcement threats, such as traders, 
  smugglers and corsair ships.   
  Particle accelerator barbettes also prove problematic in guunery exercises. 
  Particle accelerator barbettes are mounted ventrally forward and dorsally a bit 
  farther aft, while the triple laser turrets are mounted on port and starboard 
  drive pods.  
  These weapons are operated form the bridge and oriented to concentrate 
  firepower forward arc. Since a small gunboat like this ship has no capacity to 
  power defensive screens such as nuclear dampers, it is particularly 
  vulnerable against nuclear weapons.  
   
   
  
   
   
  Control 
  The control functions for the whole ship are concentrated in the bridge, which 
  has 4 seats for a pilot on left front row, a gunner on right front row, a skipper 
  on left back row, and an engineer on right back row. In addition there are 2 
  reserve seats on the bridge. This ship uses 3 Model 9/fib computers with 25 
  HoloLink and 2 HUpHoloDisp also installed the newest FCS. These systems 
  are the newest and capable models of LSP-affiliated ANSON, and mounted 
  on all of imperial fleet these days, but some "monkey models" sold to 
  provincials only mount a Model 6/fib.  
  A life support throughout the ship is provided by a basic environment system 
  (heat, lights), a basic life-support (sealed environment, atmos, water), a 
  extended life support (food, waste recycle), an artificial grav Plates and 
  inertial compensators.  
   
   
   
  
   
   
  Accommodation 
  The officers use individual staterooms and enlisted use dual occupancy 
  staterooms. Each stateroom has bed, fresher, storage and multi mode 
  monitor.  
  The bed is the standard size bunk, which folds into the cabin wall. Grav plates 
  can be adjusted to provide a range from 0.0 to 1.5 G for personal comfort.  
  The fresher includes a multi-function shower, toilet and sink. All components 
  fold unobtrusively out of the way when not in use.  
  Multi mode monitor relieves the boredom of the long patrol operations by 
  providing entertainment, research facilities, and computer access. The wide 
  range of entertainment activities includes holographic theatrical productions, 
  video shows, interactive drama, and audio programming.  
   
   
  
   
   
  The computer terminal also allows access (on a restricted basis) to the main 
  computer for data processing.  
  This ship has 2 emergency low berths, each can hold up to 4 persons, all of 
  whom share the revival roll. An emergency low berth can hold one conscious 
  person for several hours at a time. 
   
   
  
   
   
  The common area is able to be variously outfitted for dining, conferences, 
  training, and entertainment. Large 3D monitors are installed on walls and 
  ceiling of the room, which give crews a choice of landscape views. The 
  common area also has a small galley for preparing crew meals, with 
  automated pantry storage in the overhead. 
  The crew of this ship consists of 2 command personnel, 2 bridge staff, 1 
  engineer, 1 gunner, 3 gig crew, and 5 troops (in most cases). However most 
  navies do not normally want to dedicate 3 crewmembers to the gig crew, and 
  the ship is often operated by as few as 6 crews, with a lieutenant or a sub-
  lieutenant as a skipper.  
   
   
  
   
   
  For example, CE-0403 Edomount has a lieutenant skipper, an ensign pilot 
  (doubling as the gig pilot), a petty officer first class engineer, a petty officer 
  third class gunner and 2 spacehand apprentices.  
  Watch crews are therefore not sufficient for round-the-clock coverage, so 
  ship's troops help with the ship operation normally, with crews really only able 
  to get sufficient rest in the jump space. The junior skipper of this small 
  warship bears heavy work load, but also has great latitude to make 
  discretionary decisions. These small naval crews work and exist in very close 
  quarters through stressful times, often becoming almost like family. 
   
   
   
  
   
   
  Sub Craft: 
  This ship carries a 20dt gig, used for light courier, transport and patrol 
  missions. It is capable of 6G acceleration, and is armed with a single laser 
  and 2 missile racks in battery. The gig carries 1 emergency low berth, (with a 
  total capacity for 4) which allows the gig to be used as a lifeboat when 
  necessary. There is docking equipment mounted ventrally. 
  Others: 
  In mind of fuel supply situation during an operation on the frontier, this ship 
  also has fuel scoops and a purification plant. This ship has 16dt of cargo hold. 
   
   
  
   
   
   
   
   
   
  
   
   
  MASA/MASA04's GF-class GIG from MASA.Ship's 
   
   
   
  CraftID:    G50, Type GF, TL 15, MCr 30 
  Hull: 
      18/45, Disp= 20, Config= 1SL, Armor= 40G 
   
       Unloaded= 296 tons, Loaded= 309 tons 
  Power:    3/6, Fusion= 846 MW, Duration= 4/12 
  Loco:    3/6, Maneuver= 6 
   
      0/0, Jump= 0 
   
      NOE= 190, Cruise= 750, Top= 1000, Vacuum= 4200 
   
       Agility= 6 
  Commo:  Radio= System x1, Laser= System x1, Maser= System x1 
  Sensors:  PasEMS= Interstellar x1, ActEMS= FarOrbit x1 
   
      EMSjammer= FarOrbit x1 
   
      ActObjScan= Rout,  ActObjPin= Rout 
     
   
      PasEngScan= Rout 
  Off: 
     Missiles= xx 2 
   
         Batt            2   
   
         Bear           2    
   
      BLaser= xx2 
   
         Batt          1    
   
         Bear         1    
  Def: 
    DefDM= +11 
   
    ArmorDM= 0, SizeCd= 0 
  Control: Computer= Model/3 x3, Panels= HoloLink x2 
   
    Special: HeadsUpDisplay x2 
   
    BasEnv, Bas LS, Ext LS, Grav plates, Inertial comp 
  Accom:   Crew= 0 (1 x 0), Seats=Roomy 8 
   
    Bridge= 1, Engrng= 0, Mtce= 0, Gunnery= 1, Flight= 0 
   
    Troops= 0, Command= 0, Stewards= 0, Frozen= 0, Medical= 0 
   
    HiPass= 0, MidPass= 0, LowPass= 0, LowBerth= 0, EmerLow= 2 
  SubCraft: 
   
  Other:   Fuel= 41 kliters,  Cargo= 10 kliters 
   
    ObjSize= Average, EMLevel= Faint 
  Design Notes  
   
    Mcr 24 in quantity 
  Variants: 
   
   
  
   
   
  Imperial Navy 
  Fleet Courier Model:  In order to cover the shortage of fleet courier, at least 
  24 close escort are remodeled and assigned to the courier mission. This 
  model replaces particle accelerator barbettes with triple missile turrets. This 
  model has a smaller power plant, fuel tank and 60 cargo hold. 
  Mine-laying Model: Space mine is a type of missile with simplified guidance 
  that waits passively until a target approaches, used to destroy trade and 
  logistics traffic in a system. Mine-laying model can hold and dispense 3000 
  mines; it mounts missile turrets instead of laser turrets, and the cargo has 
  been refitted as a missile magazine.  This model can likewise be used for a 
  missile artillery platform. 
  Special Force Model: Imperial marine reconnaissance units use this model. It 
  can transport 2 squads with their full equipment, and can control the mission 
  using dedicated communication systems. The 20dt gig is also remodeled for 
  this mission, removing the emergency low berths.  Laser turrets be replaced 
  with missile turrets based on mission requirements, to allow the use of 
  specialized munitions. 
  Imperial interstellar Scout Service 
  Scout:  Since IISS has original systematic classification of ships, few naval 
  type ships are in commission as IISS ships. In the background, there are the 
  traditional inter-service rivalries between the Imperial Navy and IISS. 
  However, the Imperial Navy has relegated 17 close escorts to IISS for the 
  scout loss replacement requisitioned by imperial navy during FFW. IISS uses 
  this model for heavy scout in frontier sub-sectors.  Plans have been made to 
  replace weaponry will missiles and sand casters, and downgrade the power 
  plants to allow longer endurance for some ships. 
  System Navy Model 
  Patrol:  This model uses as a patrol ship. This model replaces particle 
  accelerator barbettes with triple missile turrets, and other equipment is also 
  downgraded;  it has FTL jump 3 drive, 0 agility and Model 3/fib computers. On 
  the other hand, boarding bridge and high penetration sensors are added to 
  aid in customs inspections. 
   
   
   
  
   
   
   
   
  
   
   
   
   
   
   
   
   
  Credits  
  Staff 
    
  Ship Design: MAG 
  CG Models: MAG 
  Supervising Editor: Sam Swindell and Craig A. Glesner 
  Web Master 化夢宇留仁 
    
   
  Generators 
   
  Ship Design: Cray Bush's Worksheet for Lotus 123 
   
   
  3D Modeling 
     
  Ships: Shade 8.5 
  Figures: Poser6J 
  Rendering: Shade 8.5，Vue9 
   
  
SOURCE: textdata/thevault/Traveller/MegaTraveller/MegaTraveller - Sieno Class Close Escort.pdf