3. Mechanical Installation
JCY-1800/1850 VDR/S-VDR Installation Guide
35
DOC No. 7ZPJD0387C
3. MECHANICAL INSTALLATION
3.1. Protective Capsule: NDH-316/317
3.1.1. Selecting the Location
The Protective Capsule contains the final recording medium. If the capsule should sink into the sea, it
would be retrieved by ROV (Remote Operation Vehicle) or by divers.
To ensure its continuous normal operation and also to ease its recovery and maintenance, the capsule
needs to be mounted at a suitable location and in an appropriate way. It should be recommended that the
capsule be mounted at a place that satisfies the following conditions.
1) External open deck, e.g. compass deck
2) A place where the capsule can be appropriately grounded to the ship’s hull
3) A place where unobstructed open space can be secured in its vicinity
4) A place as close to the central line of the ship as possible
5) A place where a compass safety distance over 3m in radius can be secured
6) A place that allows easy recovery of the capsule, should the ship sink into the sea
3.1.2. Installing the Capsule
3.1.2.1. Mounting the Capsule
1) NDH-316 for VDR
Mount the capsule with 12 mm steel bolts to the mounting bracket on the external deck. To secure the
grounding of the capsule, do not paint the contact surface of the mounting bracket.
FIG. 3-1-1: Mounting the Protective Capsule NDH-316
ＶＯＹＡＧＥ ＤＡＴＡ ＲＥＣＯＲＤＥＲ
ＤＯ ＮＯＴ ＯＰＥＮ
ＲＥＰＯＲＴ ＴＯ ＡＵＴＨＯＲＩＴＩＥＳ
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