413 N. Causeway Blvd. - Metairie, LA 70001 - P.O. Box 821 - Metairie, LA 70004-0821

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NED-DECK MARINE

Ned-Deck Marine - or NDM for short - is an internationally operating, dynamic and innovative manufacturer of life-saving appliances, RHIB catch systems and deck cranes. In recent years NDM has become one of the leading companies in the lifesaving industry world wide.

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Hydraulic Slewing Davit: SCHD 20 - 4.0 R - 20 kN (Rescue)

Rescue Davits - Hydraulic Slewing: The NED-DECK MARINE hydraulic slewing davits have been designed for long time operation under adverse and extreme conditions in a highly corrosive marine environment.
The hydraulic slewing davits of the SCHD series are so-called “plug-in and play units” all guaranteeing easy installation on board.
The SCHD davit is a freestanding deck mounted davit consisting of a davit arm, a flange/pedestal, a hydraulic driven slewing ring, an electric driven winch and an integrated hydraulic power pack unit.
The system is suitable for safe and efficient launching and recovery of a fully manned rescue boat against unfavourable conditions of trim of up to 10 degrees and a list of up to 20 degrees either way.

Slewing out the fully manned rescue boat from its stowed position into launch position is realised by means of accumulated power obtained from a self-containing hydraulic power pack unit.
The slewing motion is actuated from within the rescue boat by means of a remote control pull wire.
Lowering is realised by means of gravity. The lowering motion can be controlled in two ways, either by means of a remote control pull wire from within the rescue boat or by lifting the brake handle of the winch directly.
Recovery of the rescue boat with its crew is realised by using the electric driven winch.
In case of a power failure or malfunctioning of the electric system, hoisting can also be done manually by using the crank handle of the winch.

Since the safe working load and outreach of the davit are normally determined by the size of the rescue boat, NED-DECK MARINE have chosen for a limited range of standard designs which can be adapted to some extent in order to meet individual and specific needs.

The SCHD series meets the latest IMO/SOLAS requirements and LSA Code as well as the European Council Directive 96/98 EC on Marine Equipment (M.E.D.).

Davit arm
The davit arm is a welded construction of a hollow section, a pipe, steel plates and a flange and provided with all relevant accessories such as winch foundation, starter box, top sheave and lifting eye.

Flange/Pedestal
Dependant on the size of the davit, the SCHD series will be delivered either with an intermediate flange or with a pedestal.
The intermediate flange should be bolted onto a counter foundation whilst the execution with a pedestal should be welded on deck.

Slewing ring
The slewing ring of the SCHD series consists of an inner-ring, an outer-ring and a single row ball bearing. The slewing ring is fastened to the davit arm and the flange/pedestal by means of high strength structural bolts and nuts.
Dependent on the size of the davit either the inner-ring or the outer-ring is driven by one or two hydraulic slewing drives.

Winch
Each davit will be supplied with an electric driven winch built onto the davit arm.
The winch is a standard item and consists of the following main components:
 Closed gear casing;
 Built-on electric motor;
 Single winch drum with separate section for remote control wire;
 Speed reducer gear (conventional gear train);
 Centrifugal brake unit for gravity lowering;
 Stop brake of the “dead-man” type;
 Manual cranking gear with safety device.

Hydraulic power pack unit
The hydraulic power pack consists of the following main components:
 Hydraulic tank with drain valve;
 Hydraulic pump;
 Electric motor;
 Pressure switches;
 Pressure relief valve;
 Control valve;
 Accumulators (2 x).

Accessories:
Each davit system will be supplied with the following accessories:

Electric controls
 Motor starter built onto the davit arm and provided with main switch, push button and “power on” indicator;
 Limit switch.

Wire rope
 Galvanised non-rotating steel wire rope provided with thimble at one end and of sufficient length for lowering the rescue boat into the water;

Remote control parts
 Stainless steel remote control wires of sufficient length for both slewing and lowering;
 Handgrips for operating from within the rescue boat;
 Remote control sheaves;
 Loose items such as wire rope clips and shackles;

Conservation
Unless agreed otherwise, all steelwork will be shot blasted to SA 2,5 and coated with one layer of 2-component epoxy primer of brand SIGMA. Dry film thickness 60-80 microns.
This conservation is not suitable for outdoor storage for a long period of time.

Optional accessories
The following accessories are to be seen as non-standard but can be supplied optionally:
 Stainless steel automatic release hook (off-load type);
 Counter foundation/Pedestal;
 Cradle for rescue boat

See MFR site: http://neddeckmarine.com/01_rescue_boat/index.php

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PLEASE CONTACT US AT (504) 833-8253 IF ASSISTANCE IS NEEDED OR IF YOU PREFER TO ORDER OVER THE PHONE. NEED SOMETHING YOU DON’T SEE HERE? CHANCES ARE WE CAN GET YOU A GREAT DEAL ON IT, JUST CALL US...


OFFSHORE SUPPLIERS INC.
413 N. CAUSEWAY BLVD.
METAIRIE, LA 70001
(504) 833-8251
 

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