IBH-094 - Bohamet

86-005 Białe Błota Ul. Toruńska2 

CIELE k/Bydgoszczy, Polska 

tel.: +48 / 52 / 3203-905 e-mail: office@bohamet.pl 

fax: +48 / 52 / 3203-906 www.bohamet.pl 

INSTALLATION MANUAL FOR WATERTIGHT AND 

SPRAY-TIGHT SHIP DOORS CLASS A60 

PRODUCER: industrial plumbing, iron castings, ship equipment 

Date: 2010-10-28 

IBH-094 

Page: 1/11 

Notes: 

The shipyard usually follows its own instructions with regard to the division and sequence of 

installation procedures. The purpose of this manual is to facilitate the installation process carried out by 

the shipyard. BOHAMET does not give any warranty with respect to installation 

performed by other companies using this manual. 

I . General comments: 

1. The so-called “clear opening” of the coaming BxH, subject to IT-16 tolerance, represents 

the functional size of the door. 

2. BOHAMET accepts claims concerning incorrect door dimensions only before the door is 

installed – welded in the wall. 

PRESSURE 

PRESSURE






3. Transport the door from the warehouse to the installation site on a pallet. The door panel 

is additionally secured with steel tape to prevent door opening. Remove the tape before 

installation. 

Steel 

tape 


4. Transport the door on the pallet on board using a crane. 

5. When manually handling the door to the installation site, remember to set all the closing 

devices in the closed position in order to avoid uncontrolled door opening. 


Date: 2010-10-28 


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II. Before the installation: 

1. Move the door on the pallet to the installation site using a crane. 

2. First of all, ensure that the ship’s side opening dimensions comply with documentation for 

the particular door. 

LIFTING LUG 


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3. If there is no opening in the ship’s side, follow steps 4 and 5 below. 

4. Mark the opening dimensions (in accordance with the diagram), maintaining the IT-14 

accuracy. 

5. Cut out the opening acc. the marking, check the opening dimensions again, taking into 

account the +2 mm tolerance. Grind cutting-out surfaces with elastic grinding discs to 

remove burrs resulting from flame-cutting. 

ANGLE DOOR FRAME 

WELDED ON THE SHIP’S SIDE 


ANGLE DOOR FRAME 

WELDED IN THE SHIP’S SIDE 

Date: 2010-10-28 


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6. Check the cut-out edges for rectilinearity and the door wall surface for flatness. Check the 

coaming for flatness using a string according to the drawing below. The maximum 

admissible spacing between intersecting pieces of string must not exceed 2 mm. 


D i a g o n a l 

D i a g o n a l 

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7. Disassemble the door by removing the hinge pins. DO NOT REMOVE THE PINS 

MARKED AS “PIN COMPLETE”. Remember the number of washers in each hinge – this 

will facilitate correct re-assembly. 


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III. Mounting the door frame in the wall. 

Put the coaming over the opening in the wall. Use wedges or spacers to ensure correct 

installation. 

1. Move the door frame to the cut-out opening and check whether it fits tight along the 

perimeter. The gap between the superstructure walls and the door coaming should not 

exceed 2 mm. 

If the gaps are greater, straighten the wall again. 


Date: 2010-10-28 


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2. Weld the door frame in the wall in accordance with the diagram and starting from the 

outside. 20 mm long tack welds must be made in the order specified in the drawing, 

maintaining a distance of 200 mm. When the tack welds are completed, check the 

flatness (acc. II.6) and the clear opening of the door frame again. Final welds 

(70 to 100 mm long) must be made in the order specified in the drawing until achieving a 

continuous weld along the whole door frame. The number of tack welds and final welds 

depends on the size of the welded coamings. 

In order to ensure that the coaming fits tight to the wall, use G-clamps every 

300÷400 mm. 

Tack welding procedure. 

COAMING 

WELD – 

OUTSIDE 


WALL 

G-CLAMP 

WELD – 

INSIDE 

INSIDE VIEW 


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INSIDE VIEW







Once the tack welds are done check the flatness (acc. II.6) and the clear opening of the door 

frame in accordance with the drawing below. The maximum admissible deviations for the 

door frame’s clear opening amount to ±2 mm for each section measured. 

HORIZONTAL 

MEASUREMENT LINES 

TRANSVERSE 


VERTICAL 


If any discrepancies are found, take appropriate corrective measures in order to obtain accurate 

dimensions. Once the dimensions are correct, apply the final weld in accordance with the 

drawing below. 


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CLEAR OPENING DIMENSIONS CHECK







COAMING 

WELD – 

OUTSIDE 

WALL 

G-CLAMP 

WELD – 

INSIDE 

INSIDE VIEW 


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INSIDE VIEW 

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IV. Door installation: 

1. Place the door panel over the coaming. Mount all hinges, remember to place all washers. 

Do not use too much force when placing hinge pins (in order to ensure correct alignment 

of all hinge elements and appropriate door opening/closing). 

2. Check whether the door fits tight – use chalk (chalk the head surface of the coaming 

along its perimeter). Close and open the door, check if there are chalk marks on the 

sealing along its perimeter. 

3. The door pressure can be individually adjusted with the use of adjusting nuts on the hinge 

pin. 

M20 NUT 

BOHAMET does not assume any liability for door installation conducted by the customer 

inconsistent with the instructions provided in this document. 


Date: 2010-10-28 


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IBH-094 - Bohamet

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