U17 (S196)
U35 (S185)
UCT Everad
Uilenspiegel
UK.12 Hoop op zegen
UK.22 Stella Polaris
UK.24 Anna
UK.37 Ursa Minor
UK.48 Nova Cura
UK.61 Neeltje
UK.73 Frisian
UK.112 Wilhelmina
UK.124 Luut Senior
UK.135 Cornelis-Trijntje
UK.135 Sjoerd Hendrikje
UK.145 Teunis van Atje
UK.146 Elizabeth
UK.150 Polar
UK.153 Lub Senior
UK.205 Spes Nova
UK.224 Tunis van Luut
UK.225 Auke Senior
UK.236 Deo Volente
UK.242 Kleine Jan
UK.266 Jacoba Aleida
UK.268 Jacoba Alyda
UK.272 Adriaantje
UK.307 Jacoba
UK.642 Berendina
Umoe Firmus
Umoe Rapid
Undine
Unicum
Union 5 (URS)
Union 5 (Kotug Smit))
Union 6 (URS)
Union 6 (Kotug Smit)
Union 7
Union 8 (URS)
Union 8 (Kotug Smit)
Union 8 (Boluda)
Union 11 (URS)
Union 11 (Kotug Smit)
Union Amber (URS)
Union Amber (Boluda)
Union Beaver
Union Boxer
Union Coral (URS)
Union Coral (Kotug Smit)
Union Coral (Boluda)
Union Diamond
Union Elisabeth
Union Emerald (URS)
Union Emerald (Kotug Smit)
Union Gold
Union Grizzly
Union Hawk
Union Jade
Union Koala
Union Lynx
Union Manta
Union Moon
Union Neptune
Union Onyx
Union Panda (Boluda)
Union Pearl (URS)
Union Pearl (Kotug Smit)
Union Pearl (Boluda)
Union Ruby (cargo)
Union Ruby (URS)
Union Ruby (Kotug Smit)
Union Sapphire
Union Silver
Union Titan
Union Topaz (cargo)
Union Topaz (tug)
Union Wrestler
Uniwind
Urania
Uranus
Uranus (survey)
Ursine
Ursula Essberger
Uruguay Star
Usedom