Dreyer Table Mark I*

The Mark I* Dreyer Table was a moderately improved version of the Mark I table, and probably first deployed in 1915. With a footprint 23% smaller than the Mark III table's, it could more comfortably fit within the smaller transmitting stations of the early dreadnought battleships and battlecruisers into which it was retro-fitted.

Mark I* Dreyer Fire Control Table as it appeared by 1918, front

Mark I* Dreyer Fire Control Table c1918, schematic

Mark I* Dreyer Fire Control Table as it would have been crewed in 1918

Particulars

The Mark I* was very nearly identical to the Mark I table, with 2 exceptions:

• The Mark I* added a gyro-compass input to keep own heading updated on the dumaresq as was done first on the Mark III table.
• The Mark I*'s gun range was conveyed to a Range Master Transmitter on the T.S. bulkhead.

It's dimensions were almost the same as those of the Mark I table, except the worm shaft bringing in gyro-compass data to the dumaresq added almost 2 feet to the height:

Overall Dimensions
Width	5 feet, 8 inches
Depth	5 feet, 1.5 inches
Height of Range Rate Grid	3 feet, 4 inches
Height of top of dumaresq	5 feet, 9 inches

Deployment

Aside from 2 deployed in monitors, the Mark I* tables were primarily deployed to Hawkins class cruisers.

Ship using Mark I* table	Date equipped	Notes
Glatton	???
Gorgon	???
Cavendish	on completion[Inference]	Completed as aircraft carrier Vindictive, she retained her 7.5-in guns and so probably retained her Dreyer table.
Effingham	on completion[Inference]
Frobisher	on completion[Inference]
Hawkins	on completion[Inference]
Raleigh	on completion[Inference]

See Also

• Dreyer Table Mark I
• Dreyer Fire Control Table

Bibliography

• Template:BibUKDreyerTableHandbook1918
• Template:BibBrooksDreadnoughtGunnery
• Template:BibBrooksThesis