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| Ptolemy
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| Class Overview
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| Category
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fleet tug / tender
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| Operational
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2224-2289
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| Constructed
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31 total
- Robinson (prototype): 1
- Ptolemy: 15 (built 2224-2227)
- Ptolemy refit: 14 (converted original 2256)
- Keppler: 15 (built 2255-2258)
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| Dimensions
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| Length
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- 211.6 m (NX-3800)
- 212.0 m (Ptolemy original)
- 222.0 m (Ptolemy refit)
- 220.1 m (Keppler)
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| Beam
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- 107.0 m (NX-3800)
- 127.1 m (standard)
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| Height
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- 67.2 m (NX-3800)
- 68.2 m (Ptolemy original)
- 66.1 m (Ptolemy refit)
- 67.0 m (Keppler)
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| Mass
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- 326,500 tons (NX-3800)
- 421,000 tons (Ptolemy original)
- 486,500 tons (Ptolemy refit)
- 626,900 tons (Keppler)
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| Performance
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| Cruise Speed
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- w 4 (Ptolemy)
- w 6 (Ptolemy refit, Keppler)
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| Tow Speed
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- w 3 (Ptolemy)
- w 4 (Ptolemy refit, Keppler)
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| Max Speed
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- w 5.0 (Ptolemy)
- w 8.0 (Ptolemy refit, Keppler)
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| Endurance
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1 year
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| Complement
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| Officers
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- 16 (standard, most dilithium tugs)
- 22 (with passenger or battle pod)
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| Enlisted
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<br<
- 68 (standard, most dilithium tugs)
- 198 (with passenger or battle pod)
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| Cargo
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- 2x 121,600 tons (Ptolemy, typical cargo pod arrangement)
- 3x 121,600 tons (Ptolemy refit, Keppler, typical cargo pod arrangement)
- 500,000 tons (maximum load other than pod, typically 2 spare warp nacelles or mass-reduced starship)
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| Tactical Systems
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| Beam Weapons
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NX-3800:
Ptolemy:
- 4x laser emitters (500 MW) (single mount) (2 dorsal/2 ventral)
Ptolemy refit, Keppler except NCC-3826:
- 2x phaser VI emitters (in 2 single banks) (aft bridge)
- 2x phaser VI emitters (in twin bank) (fwd ventral sensors)
All:
- Heavily armed battle pods sometimes carried
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| Shields
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- 1-layer conformal forcefield
- Primary navigational deflector (support strut)
- Secondary navigational deflector (fwd hull)
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| Transporters
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Ptolemy:
- 1x GP (6-pad), Mk I
- 1x emergency evacuation (22-pad), Mk I
- All ships brought to Mk II standard after 2241
most Keppler:
- 1x GP (6-pad), Mk III
- 1x emergency evacuation (22-pad), Mk III
NCC-3816-3820:
- 1x GP (6-pad), Mk III
- 1x cargo, Mk III
- 1x emergency evacuation (22-pad), Mk III
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| Auxiliary Craft
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Original:
- 2x shuttlepods
- 1s work pod
refit 2241, Keppler:
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