This reproduction of the Orion's chart of her course across the approaches to the Hauraki Gulf shows also
the position of ships sighted while her minelaying was in progress. The numbers added in black give a
key to translations of the notes on the map:

(1) vessel in sight; (2) steamer in sight; (3) steamer in sight; (4) position
of sinking of Niagara; (5) steamer in sight; (6) Moko Hinau light;
(7) blacked-out vessel; (8) vessel; (9) moon bearing at 2100 hours.
The main heading at the bottom of the map states that it is to be super-
imposed on British 2543, enclosure No. 2 to Report No. 201 of 7 August
1940. The thin line shows the raider's course, the thicker line shows mines
about 800 metres apart, and the double lines show mines about 400 metres
apart.