Ingmar Pill
Baltic Workboats AS Your ref 15.06.2026
[email protected]
Our ref 19.06.2026 nr 17.1-3/26/10847-1
Ship structure (building No. 90254) – sill
height compliance assessment
Dear Mr Pill,
This letter concerns the ship structure with building number 90254.
The Estonian Transport Administration provides the following position regarding certain door sill
heights that do not comply with the International Convention on Load Lines (ICLL), as amended
in 2003 (Annex I, Regulation 12(3)).
The Administration has assessed the deviations and considers them acceptable under the following
conditions and justifications:
Doors No. 101 (sill height 115 mm) and No. 102 (sill height 120 mm), located as external
doors of the wet laboratory on the freeboard deck, are accepted on the following conditions:
o The internal doors within the same space (No. 105 and No. 106), each with a sill height of
230 mm, are deemed sufficient, taking into account the excess freeboard (158 mm, as
determined by the freeboard calculation), which compensates for the deficiency in
accordance with Annex I, Regulation 2(5) of the ICLL;
o The wet laboratory space is not included in the vessel’s stability calculations.
Doors No. 103 (sill height 230 mm), No. 204 (sill height 320 mm), and No. 113 (sill height
250 mm) located on the freeboard deck are considered acceptable, as the excess freeboard
compensates for the deviation in accordance with Annex I, Regulation 2(5) of the ICLL.
Door No. 104 (sill height 60 mm) is accepted on the condition that the corresponding space is
not included in the vessel’s stability calculations.
This assessment is made in accordance with the applicable provisions of the International
Convention on Load Lines (ICLL), taking into account the documented freeboard calculations and
Valge 4 / 11413 Tallinn / ESTONIA / +372 620 1200 /
[email protected] / www.transpordiamet.ee
Registry code 70001490
the functional characteristics of the respective spaces.
Yours sincerely
(Digitally signed)
Jan Jaanson
Head of Shipping Department
Margus Liigsoo
+372 5645 0888,
[email protected]
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