Dreyer Table Mark I*

The Mark I* Dreyer Table was a moderately improved version of the Mark I table. It added a helm-free capability and a more comprehensive means of outputting gun range. The few ships to receive it were completed too late to see wartime service.

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.

Its 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 completed after the war. As the cruisers were all completed postwar and the monitors completed in the last weeks of the war, the Mark I* table is a historical footnote in World War I naval history.

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