Ptolemy class Keppler variant (2276 upgrade).

Ptolemy class history and variants, by Andrew Brown:

1. There are 140 units, all are built as they are desperately needed.

2. It takes 18 months or 1.5 years to produce each unit.

3. This is 210 years of work for one shipyard. To produce all units in ~14 years requires 15 shipyards.

4. 15 units are thus produced every 1.5 years.

- The entire Batch I (Ptolemy) is built in the first run and introduced into service around January 2253.

- The entire Batch II (Keppler) is built in the second run and introduced into service around July 2254.

- Batch III (Doppler) is built from the third to seventh runs (five runs) and introduced into service from January 2256 to July 2260.

- Batch IV (Dollond) is built from the eighth to tenth runs (three runs) and introduced into service from January 2262 to January 2265.



- 2250-01: Batch I begins building.

- 2251-07: Entry in to service. No in-service operational data available for design modifications or improvements. Batch II begins building to original Batch I specs.

- 2253-01 - 1.5 years in service: With only fifteen (15) ships they are being used for high priority cargoes on runs to fully-developed sites such as starbases or industrialised worlds with spaceborne transfer stations. As such, the cargo transfer capabilities and capacity of the existing design specs are deemed adequate to this task. The first run of Batch III thus begins construction to the original Batch I design specs.

- 2254-07 - 3.0 years in service: Now with thirty (30) ships in service they are beginning to be used for less developed worlds, but the amount of supplies being delivered to each are less and so organic cargo transfer capabilities and capacity of the existing design specs are deemed adequate to this task also. The second run of Batch III thus begins construction to the original Batch I design specs.

- 2260-07: 9.0 years in service: Now with ninety (90) ships in service they are being used for all possible duties and routes. It has become apparent over the last few years that the organic cargo transfer capabilities and capacity of the existing design specs are no longer adequate in frontier or undeveloped regions with no cargo infrastructure of their own, and several cargo shuttles and additional Workbees would be a massive asset to transport/tug operations. Several design modifications are trialled but the simplest and most efficient way from a construction standpoint is to add in a shuttlebay superstructure rather than entirely reconfigure the internal layout of the primary hull. The bay is placed at the base of the now-shortened dorsal neck on the cargo clamp, and hosts four double-sized cargo shuttles, a standard admin shuttle, and additional Workbee stowage and recharge slots. The forward ventral saucer shuttlebay is now exclusively used for Workbees, with its own number of recharge slots expanded.

- 2262-01 - 10.5 years in service: Now with ninety-nine (99) ships in service. The first run of Batch IV are built to the new design specs incorporating a shuttlebay superstructure.

Andy's notes:

In conclusion, the Batch IV Doppler sub-class is the only one that will be externally different from Batches I to III. This kinda works out as I can promote "my" Doppler as also having "expanded hanger facilities", tying in or at least giving a nod to the Doppler Mk VI-C "heavy transport tug" orthos. It also lets your Hirayama be sans external shuttlebay.

Though, I think that over the life cycle of the Ptolemy class, those ships that do get pulled in for uprating would have this hanger bay fitted.

This would lead to greater ship diversity and individuality. We have in our fleet:

1. Original non-uprated Ptolemys.

2. "Dopplerised" non-uprated Ptolemys.

3. Uprated Ptolemys.

4. "Dopplerised" uprated Ptolemys.

5. Phase II Ragnoks.

6. TMP Denevas.

Length, draught, beam:

Primary hull length: 128 metres

Primary hull draught: 32.5 metres

Primary hull beam: 127.1 metres
(same as Achernar class)

Blueprints of comparable technology.

Nacelle length: 164.3 metres

Nacelle draught: 19.6 metres

Nacelle beam: 13.5 metres
(LN-52 SCNN same as Achernar class upgrade)

Crew: 150 (21 officers and 129 enlisted crew)

Computers: “Fasfax” Duotronic II, Ferranti-Mnemonics, Reading, Berkshire.

Propulsion: warp: Dennison/Westinghouse, San Francisco.
Impulse: Scarbak Propulsion Systems, Cairo.
“Asaks” Chemical reaction control system, Orage Ijek, Aksajak, Andoria.

Life support: CT-3/Centris artificial gravity generator.
“Coraza” radiation shielding, Critobal SM/S, Manila.
“Ambrix” Waste regeneration systems, Jullundur-Lahore Ltd, Mumbai.



Images of the U.S.S. Keppler with hybridised refurbishment by my good friend Andrew Brown. Used with permission.

NCC Registry	Name	Notes
3801	Ptolemy	Class ship. Authorised stardate 0965.
3802	Al-Rashid
3803	Anaxagoras
3804	Anaximander
3805	Aristarchus
3806	Ibn Daud
3807	Eratosthenes
3808	Galilei
3809	Hipparchus
3810	Ulugh Beg
3811	Philolaus
3812	Pythagorus
3813	Thales
3814	Hevelius
3815	Copernicus	Lost. Replaced with Oberth class NCC 640.
3816	Keppler	Sub-class authorised stardate 3640.
3817	Abartsumian
3818	Flamarion
3819	Schiaparelli
3820	Deslandres
3821	Brahe
3822	Newton
3823	Riccioli
3824	Cassini
3825	Donati
3826	Kidinnu
3827	Piazzi
3828	Leverrier
3829	Luyten
3830	Messier
3831	Doppler	Sub-class TMP refit. Authorised stardate
3832	Gaillot
3833	Halley
3834	Holden
3835	Jeffrey
3836	Kuiper
3837	Oort
3838	Pritchett
3839	Savary
3840	Struve
3841	Vogel
3842	Airy
3843	Bondi
3844	Chauvenet
3845	Eddington
3846	Gautier
3847	Hencke
3848	Hubble
3849	Leavitt
3850	Peale
3851	Rittenhouse
3852	Secchi
3853	Tombaugh
3854	Wolaston
3855	Baade
3856	Campbell
3857	Columbo
3858	Encke
3859	Goldricke
3860	Herschell
3861	Humanson
3862	Klepstra
3863	Mitchell
3864	Pickering
3865	Ross
3866	Shklovsky
3867	Toscanelli
3868	Wright
3869	Bayer
3870	Carrington
3871	Kruger
3872	Fracastor
3873	Hale
3874	Hirayama	'Hawkins' Forge'.
3875	Jansky
3876	Laplace
3877	Newcomb
3878	Popper
3879	Sabine
3880	Schmidt
3881	Van Der Kamp
3882	Von Zach
3883	Chamberlain
3884	Biela
3885	Dollfus
3886	Galle
3887	Hayashi
3888	Hubbard
3889	Kaula
3890	Lockyer
3891	Palitzsch
3892	Reber
3893	Scheiner
3894	Swift
3895	Walker
3896	Apian
3897	Brovwer
3898	Clark
3899	Dreyer