About Us
A leader in the field of ship outfitting and insulation
The group’s broad expertise is reflected in the organization of the four individual companies providing comprehensive products and services for new buildings, maintenance and repair.
As a full service provider the Lethe group has the very best conditions for providing fast and smooth project management.
By making its own key equipment elements, Lethe reduces its dependence upon suppliers. This means fewer interfaces, no lost time and greater flexibility, so that each order is individually handled and tailor-made in line with customer wishes.
Solutions implemented by Lethe are a combination of all the major considerations – functionality and aesthetics, safety and comfort, cost-efficiency and environmental awareness.
Backing this up is a comprehensive portfolio of services – from planning to production, through to assembly and site management with having a quality management system in place to safeguard the group’s high standards. Lethe specialists are on hand with support at all stages whenever and wherever it is needed.
Products
Whether steel, stainless steel or aluminium: LETHE lines up a wide range of materials to be used. The company enjoys the benefits of in-house production capacities. In contrast to batch production, each production stage here is individually and flexibly adjusted to suit the requirements of the individual projects and products.
Experienced employees work hand in hand with the greatest care and a particular sense of responsibility. Their expertise allows for a high level of vertical range of manufacture which goes far beyond bending and welding.
The interaction with specially adapted control mechanisms ensures high quality standards and the best possible production results.
- Manufacturing of in-house product ranges
- Specially trained staff
- Design according to specific customer requirements
- High level of vertical integration
- Broad range of materials
- High degree of flexibility
All products are subject to continuous further development in order to comply with the applicable testing procedures and regulations at all times.
Fire Doors
LETHE fire doors, developed for use on board the modern mega yacht, not only comply with the fire protection requirements for classes BO through to A60, but also fulfil all requirements with regard to individual design possibilities or specific customer requirements.
LL-D4-A60
A60 class non watertight single hinged door of, type designation LL-D4-A60
- SeeBG module B type approval no. M20007 single hinged door with above mentioned type designation
- Clear opening dimension in the door frame, max. CO x CH 1020 x
2100 mm,
min. CO x CH 600 x 750 mm (VX), 600 x 1200 mm (TECTUS
626 3D A8),
Reduction due to open door not considered,
Larger dimensions n. MSC.1/Circ. 1319 possible
Max. CH: 2415 mm, but the area of the leaf must not exceed 2.35 m²
Max. CO: 1020 mm (no wider option available) - Weight of app. 74 kg/pcs. for a door with COxCH 1000 x 2000 mm and a noise reduction depending on the type of sill
- Max. weight of the covering per door leaf not to exceed 15 kg/m² or 30 kg/leaf
Door type LL-D4-A60 with the following optional equipment:
- Steel mounting frame for welded or screw connection
- Door leaf with white industrial HPL (~RAL 9016)
- Door leaf with all-round frame with frame wrap (13 mm) in stainless steel, brushed K240
- Gap dimensions on all sides approx. 4 mm
- 3 pcs. door hinges, consisting of 3D adjustable hinge holder and hinge
of type Simonswerk
VX7729/100 in stainless steel, brushed K240, hinge length 100 mm - Coaming cover in brushed stainless steel, K240
Optional equipment:
- Door frame and frame for door leaf painted in RAL or NCS color
- Legs of door leaf frame in straight design (15-30mm) for subsequent covering of the leaf or in folded design (13 mm) for decorative HPL
- Alternative leaf edging with 2 mm ABS edge (only for TECTUS 626 3D A8 hinge in concealed version!)
- Window with clear opening of max. 500 x 500 mm (square) or Ø 500 mm (round) and window frame 60 mm x 3 mm in ground stainless steel, K240 or polished 3D/2R
- Cable transition for supplying electrical components installed in the door leaf, such as electric panic locks or motorized locks for access control
- Folding lever handle with handle shell recessed into the door leaf, only possible on one side, in brushed stainless steel, K240 or polished 3D/2R
- Hose flap with clear dimensions in accordance with valid SOLAS regulations (150 x 150 mm)
- 3x Simonswerk VX7729/100 (straight) or VX7749/100 (cranked) door hinges
in stainless steel, surface brushed K240 or 3D/2R polished, hinge length
100 mm or
2x Simonswerk TECTUS 626 3D A8 each in concealed or recessed (16 mm above blade surface) version for subsequent covering of the slope side with max. 24 mm coating - Magnetic proximity switch type Bernstein MA08
- Door leaf with Athmer Schall-ex L15/30 drop-down seal
further info on data sheet…
LYD-3plus-A60
A60 class non watertight single hinged door of, type designation LYD-3plus-A60
- SeeBG module B type approval no. SEE073P0000523 single hinged door with above mentioned type designation
- Clear opening dimension in the door frame, max. CO x CH 1050 x
2159 mm,
min. CO x CH 600 x 750 mm (VX), 600 x 1200 mm (TECTUS
526 3D),
Reduction due to open door not considered,
Larger dimensions n. MSC.1/Circ. 1319 possible
Max. CH: 2482 mm, but the area of the leaf must not exceed 2.49 m²
Max. CO: 1050 mm (no wider option available) - Weight of app. 100 kg/pcs. for a door with COxCH 850 x 2000 mm and a noise reduction of 31 dB depending on the type of sill
- Max. weight of the covering per door leaf not to exceed 15 kg/m² or 30 kg/leaf
Door type LYD-3plus-A60 with the following optional equipment:
- Steel mounting frame for welded or screw connection
- Door leaf with white HPL Resopal 105/60 (~RAL 9010)
- Door leaf with all-round frame with frame wrap (13 mm) in stainless steel, brushed K240
- Gap dimensions on all sides approx. 4 mm
- 3 pcs. Door hinges, consisting of 3D adjustable hinge holder and hinge
of type Simonswerk
VX7729/100 in stainless steel, brushed K240, hinge length 100 mm - Coaming cover in brushed stainless steel, K240
Optional equipment:
- Door frame and frame for door leaf painted in RAL or NCS color
- Legs of door leaf frame in straight design (15-30 mm) for subsequent covering of the leaf or in folded design (13 mm) for decorative HPL
- Window with clear opening of max. 600 x 750 mm (rectangle) or Ø 500 mm (round) and window frame 60 mm x 3 mm in ground stainless steel, K240 or polished 3D/2R
- Cable transition for supplying electrical components installed in the door leaf, such as electric panic locks or motorized locks for access control
- Folding lever handle with handle shell recessed into the door leaf, only possible on one side, in brushed stainless steel, K240 or polished 3D/2R
- Hose flap with clear dimensions in accordance with valid SOLAS regulations (150 x 150 mm)
- Simonswerk VX7729/100 (straight) or VX7749/100 (cranked) door hinges in
stainless steel, surface brushed K240 or 3D/2R polished, hinge length
100 mm or
3x Simonswerk TECTUS 526 3D each in concealed or recessed (8 mm above blade surface) version for subsequent covering of the slope side with max. 12 mm coating - Magnetic proximity switch type Bernstein MA08
- Door leaf with Athmer Schall-ex L15/30 drop-down seal
further info on data sheet…
LL-DL2-A60
A60 class non watertight double hinged door of, type designation LL-DL2-A60
- SeeBG module B type approval no. M20008 double hinged door with above mentioned type designation
- Clear opening dimension in the door frame, max. CO x CH 1800 x
2200 mm,
min. CO x CH 1200 x 750 mm (VX), 1200 x 1200 mm (TECTUS
626 3D A8),
Reduction due to open door not considered,
Larger dimensions n. MSC.1/Circ. 1319 possible
Max. CH: 2530 mm, but the area of the leaf must not exceed 4.35 m²
Max. CO: 1800 mm (no wider option available) - Weight of app. 130 kg/pcs. for a door with COxCH 1200 x 2000 mm and a noise reduction of 32 dB depending on the type of sill
- Max. weight of the covering per door leaf not to exceed 15 kg/m² or 30 kg/leaf
Door type LL-DL2-A60 with the following optional equipment:
- Steel mounting frame for welded or screw connection
- Door leaf with white industrial HPL (~RAL 9016)
- Door leaf with all-round frame with frame wrap (13 mm) in stainless steel, brushed K240
- Gap dimensions on all sides approx. 4 mm
- 3 pcs. Door hinges, consisting of 3D adjustable hinge holder and hinge
of type Simonswerk
VX7729/100 in stainless steel, brushed K240, hinge length 100 mm - Coaming cover in brushed stainless steel, K240
Optional equipment:
- Door frame and frame for door leaf painted in RAL or NCS color
- Legs of door leaf frame in straight design (15-30 mm) for subsequent covering of the leaf or in folded design (13 mm) for decorative HPL
- Alternative leaf edging with 2 mm ABS edge (only for TECTUS 626 3D A8 hinge in concealed version!)
- Window with clear opening of max. 500 x 500 mm (square) or Ø 500 mm (round) and window frame 60 mm x 3 mm in ground stainless steel, K240 or polished 3D/2R
- Cable transition for supplying electrical components installed in the door leaf, such as electric panic locks or motorized locks for access control
- Folding lever handle with handle shell recessed into the door leaf, only possible on one side, in brushed stainless steel, K240 or polished 3D/2R
- Hose flap with clear dimensions in accordance with valid SOLAS regulations (150 x 150 mm)
- 4x Simonswerk VX7729/100 (straight) or VX7749/100 (cranked) door hinges
in stainless steel, surface brushed K240 or 3D/2R polished, hinge length
100 mm or
2x Simonswerk TECTUS 626 3D A8 each in concealed or recessed (16 mm above blade surface) version for subsequent covering of the slope side with max. 24 mm coating - Conical contact sensor Assa Abloy 10405.10R
- Door leaf with Athmer Schall-ex L15/30 drop-down seal
further info on data sheet…
LM50-D4-B15
B15 class non watertight single hinged door for LM-wall system, type designation LM50-D4-B15
- SeeBG module B type approval no. DMT-M23004-B single hinged door with above mentioned type designation
- Clear opening dimension in the door frame, max. CO x CH 1000 x
2102 mm,
min. CO x CH 600 x 750 mm (VX), 600 x 1200 mm (TECTUS
526 3D),
Reduction due to open door not considered,
Larger dimensions n. MSC.1/Circ. 1319 possible
Max. CH: 2415 mm, but the area of the leaf must not exceed 2.31 m²
Max. CO: 1020 mm (no wider option available) - Weight of app. 70 kg/pcs. for a door with COxCH 800 x 2000 mm and a noise reduction of 32 dB depending on the type of sill
- Max. weight of the covering per door leaf not to exceed 15 kg/m² or 30 kg/leaf
Door type LM50-D4-B15 with the following optional equipment:
- Steel door frame for screw connection, available in five different geometry
- Door leaf with white industrial HPL (~RAL 9016)
- Door leaf with all-round frame with frame wrap (13 mm) in stainless steel, brushed K240
- Gap dimensions on all sides approx. 4 mm
- 3 pcs. Door hinges, consisting of 3D adjustable hinge holder and hinge
of type Simonswerk
VX7729/100 in stainless steel, brushed K240, hinge length 100 mm - Coaming cover in brushed stainless steel, K240
Optional equipment:
- Door frame and frame for door leaf painted in RAL or NCS color
- Legs of door leaf frame in straight design (15-30 mm) for subsequent covering of the leaf or in folded design (13 mm) for decorative HPL
- Alternative leaf edging with 2 mm ABS edge (only for TECTUS 526 3D hinge in concealed version!)
- Window with clear opening of max. 500 x 500 mm (square) or Ø 500 mm (round) and window frame 60 mm x 3 mm in ground stainless steel, K240 or polished 3D/2R
- Cable transition for supplying electrical components installed in the door leaf, such as electric panic locks or motorized locks for access control
- Folding lever handle with handle shell recessed into the door leaf, only possible on one side, in brushed stainless steel, K240 or polished 3D/2R
- Hose flap with clear dimensions in accordance with valid SOLAS regulations (150 x 150 mm)
- 3x Simonswerk VX7729/100 (straight) or VX7749/100 (cranked) door hinges
in stainless steel, surface brushed K240 or 3D/2R polished, hinge length
100 mm or
3x Simonswerk TECTUS 526 3D each in concealed or recessed (8 mm above blade surface) version for subsequent covering of the slope side with max. 12 mm coating - Magnetic proximity switch type Bernstein MA08
- Door leaf with Athmer Schall-ex L15/30 drop-down seal
further info on data sheet…
Inspection flaps
As with the LETHE fire doors, the LETHE inspection flaps are available in a wide range of customisable models. Whether as a special design or as an addition to a LETHE panel system, the flaps can be modified both technically and visually.
Please contact us for further information.
IDx-B15 (B class approved)
B class non watertight hinged hatch, type designation IDx-B15
Inspection flaps with different equipment and in different designs.
For more information, please refer to the following drawings and product information or contact us directly.
IDC-(C class only)
C class non watertight hinged hatch, type designation IDC-XXX
Inspection flaps with different equipment and in different designs.
For more information, please refer to the following drawings and product information or contact us directly.
Panel Systems
The LETHE panel systems family includes solutions for a segmented wall and ceiling surface design. Our metal sandwich panels can be customised according to your weight-saving needs through the use of various surface layers made from aluminium or steel as well as through variation of the core materials of mineral wool, foam or aluminium honeycombs. The multitude of design possibilities for the outer surfaces as well as their availability as fully pre-segmented systems make our sandwich systems the perfect product for the interior fittings for vessels of any kind.
Wall system type LM
Interior wall panel-system of type designation LM
Description
- Interior wall system of type LM with a total thickness of 25 or 50mm, a sound insulation factor of approx. Rw = 24 dB (as single bare wall) and a fire rating of at least B15. Designed with one (25mm) or two (50mm) decorative surface sides in PVC foil, painted sheet metal or without decorative surface as bare wall system
- Sound insulation values for all systems were measured under test conditions. Final values depend on room and installation conditions
- All panels, unless otherwise described, to be of sandwich type with a mineral wool core of 150kg/m³. Sheet metal covering to be optionally made of steel plates with a thickness of 0.70mm or aluminum with a thickness of 0.80mm. Special execution in stainless steel possible
- Standard grid width of wall system to be 535mm single width and panel lengths up to 2500mm to be in accordance with specific room situation. ! The maximum panel length according latest valid certificates needs to be considered for B class divisions !
Standard accessories
- Sill profile BP_D; 1.2 galvanized steel with holes, angles with different length (22/35) and anti vibration foam inlay
- Wall support for single walls at a height of approx. 1,6m above floor level by galvanized U-profile type UK1-WS (approx. 1,5x15x50x15x2500mm) fixed to bulkheads by means of threaded bolts and rubber suspended hangers
Optional accessories
- Sill type accoring demands
- Grid work to design and manufacture panels in accordance with specific room situation incl. prefabricated inner and outer corner panels; preparation of required grid drawings for installation
- Additional support layer according demands by galvanized U-profile type UK1-WS or aluminum U-profile type UK1-WA (both approx. 1,5x15x50x15x2500mm) fixed to bulkheads by means of threaded bolts and rubber suspended hangers
- Connection profile (H profile) (CP for bare- / CPC for decorative wall)
- Connection profiles for outer/innner corners with variable angle (ST1 / ST2)
- Endprofile (END/RW) for bare systems; galvanized steel or bare aluminum
- Connection profile for outer 90° corners (VB) for bare systems; galvanized steel or bare aluminum
- Connection profile (UP1 / UP2) for T-joints
- M8 threaded rods for wall support
- Hanger for wall support of type Hilbig HG 40/25H 40 Shore, galvanized steel for 8mm bolts
- Revision hatches with or without B class approval (for further information please refer to products/revision flaps)
Optional- / specal executions
- Special coaming for wet room panels at the lower panel end to allow installation on wet room sill
- Panel reinforcements (e.g. for installation of handrails)
- Window and fire hose boxes
- Honeycomb or foam core
Ceiling system type LM
Interior ceiling panel-system of type designation LM
Description
- Interior ceiling system of type LM with a total thickness of 25mm and a fire rating of at least B15. Designed with one decorative surface sides in PVC foil, painted sheet metal or without decorative surface as bare ceiling system
- All panels, unless otherwise described, to be of sandwich type with a mineral wool core of 150kg/m³. Sheet metal covering to be optionally made of steel plates with a thickness of 0.70mm or aluminum with a thickness of 0.80mm. Special execution in stainless steel possible
- Standard grid width of wall system to be 535mm single width and panel lengths up to 2500mm to be in accordance with specific room situation. ! The maximum panel length according latest valid certificates needs to be considered for B class divisions !
Standard accessories
- Wall to ceiling profile for PVC cover profile 28x40, galvanized steel; cover profile of PVC, various colors
- Ceiling support profile type EP9, 1.5x25x60x25, galvanized steel
Optional accessories
- Grid work to design and manufacture panels in accordance with specific room situation incl. prefabricated inner and outer corner panels; preparation of required grid drawings for installation
- Substructure profile; aluminum 50/50x3mm; L=6000mm
- Wall to ceiling connection profile (EP1 / 3 / 5 / 7); different executions
- Ceiling to ceiling connection T profile (EP2 / 4 / 6 / 8); various executions
- M8 threaded rods for wall support
- Hanger for ceiling support of type Hilbig HG40/T, galvanized steel for 8mm bolts
Optional- / specal executions
- Revision hatches with or without B class approval (for further information please refer to products/revision flaps)
- Panel reinforcements
- Honeycomb or foam core
Ceiling system (cassette-type) type LWC
Interior cassette-type ceiling system LM46-LWC-B15
- Interior ceiling system of cassette-type, product designation LM46-LWC-B15, certificate no. 102.333 of See-Berufsgenossenschaft
- Cassettes to be of 0.8mm steel sheet metal. Surface to be galvanized, foil-covered or lacquered in accordance with customers’ requirements. Special design in stainless steel or for coverings to be completed by customer in leather for example
- Maximum dimension in accordance with module B certificate to be LxW: 2000x500mm, minimum dimension to be not less than 150x150mm
- Core material to be mineral wool with a density not less than 220kg/m³. System to be covered by additional layer of mineral wool of 45kg/m³ for B15 purpose
- C class execution with lower core density (150kg/m³), larger dimensions and without additional cover layer possible
- Substructure of clamping profiles of galvanized steel (individual length to be 4000mm) in longitudinal as well as in transverse direction. Profiles connected by cross- (approx. 6pcs./m²), longitudinal- (approx. 4pcs/m²) and T-connectors (approx. 6pcs./m²). Amount and type of connectors to be in accordance with respective room situation
- Quantity of hanger /threaded bolt combination connecting the profile grid to the ship structure in accordance with final weight of panel system. Standard amount of 5pcs./m². Hanger of type Hilbig HG40/T
- Different ceiling profiles to connect wall and ceiling system available
Insulation
The LETHE product and service solutions include all insulating applications on board. The collaboration between in-house and external experts ensures that all applicable requirements are fulfilled as regards thermal, fire-resistant, acoustic, pipework and exhaust gas insulation. All areas, from construction through to fitting, are thus looked after and supported with our own products.
Please contact us for further information.
Wet Units
Many years of experience in the production and installation of wet units for mega yachts make LETHE a reliable partner today for the turnkey construction of a wide range of custom-designed wet unit solutions. The concepts, which are adapted for customer requirements and the construction process, are implemented by our experts from planning through to commissioning and continuous support is also provided.
Please contact us for further information.
Shore Power Solutions
Amended and new regulations and requirements valid both today and in the future call for reduced emissions by vessels while docked at the berth. A simple and cost-efficient possibility to comply with the guidelines is the use of shore connection systems. These require a failsafe flexible solution to bridge the vessel/shore interface. With the aim of addressing this issue we developed our containerized on-shore power supply systems, drawing on over ten years of experience that we have in this field to provide a variable and economically viable 6,6 kV (HVSC) system.
AmpCon40-MS
Containerized system for HV shore power connection
variable positioning over the entire width of the vessel
The AMPCon40-MS on-shore power supply system that is now available is
the result of the consistent development and improvement as well as the
optimization of all individual components. In this context, increased
attention was paid to requirements from the market and to their systematic
implementation. One example of this is the option to position the unit in
the midship area as well as on the port or starboard side. This variability
provides for compatibility with the majority of the vessels in a fleet. In
addition, these features are supported by a robust cable guiding system
with low maintenance requirements which can be used by the crew members to
securely route a minimum of 55m of cable over the side of the vessel to the
shore.
The optimized control system, which also ensures the tensioning function,
in combination with the entirety of the components, allows for a “HV
Shore Connection System (HVSC)” produced in accordance with
international standards.
By gaining the company ABB as a system partner, who has overall
responsibility for the system, if requested by the customer, we are able to
offer a complete package of container units and any necessary adaptations
to the vessel.
System benefits - AMPCon40-MS
- Variable positioning on board in midship, port or starboard positions
- Equipped for use in all climate zones thanks to complete insulation and air drying
- Robust cable guiding with low maintenance requirements
- Minimum cable length of 55m
- Easy and secure handling
- Manufactured according to international standards (IEC/ISO/IEEE/80005-1)
- Possibility of overall system responsibility by cooperation with ABB
Other products and special solutions
New guidelines, special technical requirements and a high degree of customisation for modern vessels lead us to constantly rethink our products. As a result, we always aim to pick up on customer requirements and wishes and transform them into special product solutions.
References
The LETHE Group customers include numerous well-known companies.
We treat the orders and projects of our customers with the utmost care and discretion. We therefore ask for your understanding that we do not name any customers or projects at this point.
We would be pleased to provide information on references on request as far as possible.
Contact
Main Office
LETHE GmbH
Seehafenstrasse 17
21079 Hamburg, Germany
Phone 0049/40/74 21 63–0
Fax 0049/40/74 21 63–220
International Agencies
Italy
TAIMAR R.I.E s.r.l.
Vicolo della Concordia 3/5
20021 Bollate (Mi) Italy
Phone 0039/02/38302720
Fax 0039/02/680 698
Mobile 0039/335/255 587
USA
Martel Marine Panels
108 Genesis Parkway
Thomasville, Georgia 31792 USA
Phone 001/229/226 2757
Fax 001/229/226 2652
