Tide trainer

Work out soundings, water under the keel and tide times, step by step.

Trains PY tides. Invented data, not for navigation.

Related questions

• On arrival at the port of Barbate, they berth in the Marina with a charted sounding = 2 metres, the yacht’s maximum draught being 2 metres, and obtain from the Tide Tables: height of nearest low water = 0.54 metres, additive correction for the arrival interval = 0.36 metres, and work out the water under the keel at that moment:
• On arrival at Ceuta, they berth at the Club Náutico CAS with a charted sounding = 2 metres, the yacht’s maximum draught being 2 metres. From the Tide Tables: height of nearest low water = 0.29 metres and additive correction for the arrival interval = 0.33 metres. They work out the water under the keel at that moment:
• At ship’s clock 0404 on 28 March (matching UTC in the 2020 Tide Tables), they arrive at Barbate and berth in the Marina with a charted sounding = 2 metres, at the time of the first high water of the day, whose height in the Tide Tables is 2.10 metres, the yacht’s maximum draught being 2 metres. They work out the water under the keel at that moment:
• At ship’s clock 17:10 after entering Barbate they tie up at the Marina waiting quay and are given a berth with a charted sounding = 2.50 m, the yacht’s draught being 2.50 m, and obtain from the current Tide Tables: nearest low water height = 0.87 m; additive correction for the arrival interval = 0.01 m. With this data they work out the water under the keel at the berth:
• On arrival at Tangier, they are given a berth in the Marina of the Real Club Náutico with a charted sounding = 2.05 metres, the yacht’s maximum draught being 2.10 metres, and obtain from the current Tide Tables: nearest low water height = 0.54 metres; additive correction for the time interval = 1.00 metres. And they work out the water under the keel:
• They arrive at Barbate and after clearing in at the Marina at ship’s clock 1230 are given a berth with a charted sounding = 2 metres, the yacht’s draught being 1.50 metres, and obtain from the current Tide Tables: nearest low water height = 0.37 metres; additive correction for the arrival time interval = 1.20 metres. They work out the water under the keel at that moment:
• At ship’s clock 0745 we arrive at the port of Barbate at the time of the first high water of the day, height = 2.30 m, and berth in the marina with a charted sounding = 2.5 m. The boat has a maximum draught of 2.20 m. Calculate the water under the keel:
• At ship’s clock 10:30 we enter Tangier with a maximum draught of 2.40 m and are given a berth in the marina with a charted sounding of 2.50 m. From the current tide tables: nearest low water height 0.35, additive correction for the arrival interval 0.15 m. Calculate the water under the keel:
• We enter Barbate at the time of the second low water of the day with a maximum draught of 1.66 m and berth at a charted sounding of 2.20 m, the Tide Tables giving a second low water height of 0.76 m. Calculate the water under the keel at the moment of berthing:
• At ship’s clock 2300, we enter the marina at Mazagón with a maximum draught of 1.80 m and tie up at a berth with charted sounding Sc = 1.60 metres. The Tide Tables give: additive correction for the arrival interval, ca = 0.30 metres, and nearest low water height abjp = 0.65 metres. Find the water under the yacht’s keel at that moment.
• We enter the port of Barbate at the time of the 2nd High Water of the day, height 1.80 metres, and berth at a charted sounding of 2 metres, our maximum draught being 1.20 metres. Calculate the water under the keel at the moment of berthing:
• Sailing at a point with a charted sounding of 5 metres (San Ciprián) and reading from the tide tables: High water time = 08:30, height 5.55 m; Low water time = 14:45, height 2.05 m. Which answer is closest to the sounding at 11:25?